Emerson MRLDS Operation Manual

Modular Refrigerant Leak Detection Sensor (MRLDS) Installation and Operation Manual

1640 Airport Road Suite #104 Kennesaw, GA 31044 Phone 770-425-2724 Fax 770-425-9319 ALL RIGHTS RESERVED The information contained in this manual has been carefully checked and is believed to be accurate. However, Computer Process Controls, Inc. assumes no responsibility for any inaccuracies that may be contained herein. In no event will Computer Process Controls, Inc. be liable for any direct, indirect, special, incidental, or consequential damages resulting from any defect or omission in this manual, even if advised of the possibility of such damages. In the interest of continued product development, Com- puter Process Controls, Inc. reserves the right to make improvements to this manual, and the products described herein, at any time without notice or obligation. Computer Process Controls, Inc. products may be covered by one or more of the fol- lowing Computer Process Controls U.S. patents: 6360553, 6449968, 6378315, 6502409, 6779918, and Computer Process Controls Australian patent No. 775,199 No- vember 4, 2004. FCC COMPLIANCE NOTICE This device complies with Part 15 of the FCC Rules. Operation is subject to the fol- lowing two conditions: (1) this device may not cause harmful interference, and (2) this device must accept any interference received, including interference that may cause undesired operation.

Table of Contents • v Table Of Contents 1 OVERVIEW................................................................................................................................................................... 1 1.1 SPECIFICATIONS............................................................................................................................................................. 1 1.2 MRLDS MODELS.......................................................................................................................................................... 1 1.3 POWERING THE MRLDS............................................................................................................................................... 1 2 CHOOSING A MOUNTING LOCATION ................................................................................................................. 2 2.1 MOUNTING THE SENSOR ............................................................................................................................................... 2 2.2 MRLDS DIMENSIONS.................................................................................................................................................... 3 3 MRLDS ANALOG VERSION (809-100X).................................................................................................................. 3 3.1 NETWORK LAYOUT ....................................................................................................................................................... 3 3.2 MRLDS WIRING ........................................................................................................................................................... 3 3.3 REFRIGERANT JUMPER SETTINGS.................................................................................................................................. 4 3.4 CONTROLLER SETUP FOR ANALOG MRLDS ................................................................................................................ 4 4 MRLDS MODBUS VERSION (809-101X).................................................................................................................. 5 4.1 NETWORK LAYOUT ....................................................................................................................................................... 5 4.2 MRLDS SETUP.............................................................................................................................................................. 5 4.3 MRLDS GATEWAY ....................................................................................................................................................... 7 4.4 CONTROLLER SETUP FOR MODBUS MRLDS .............................................................................................................. 11 5 DIAGNOSTICS............................................................................................................................................................ 14 5.1 MRLDS LED INDICATORS ......................................................................................................................................... 14 5.2 E2 ALARMING ............................................................................................................................................................. 14

1 Overview CPC specs a modular refrigerant leak detection sensor (MRLDS) that continuously monitors for low levels of refrigerants most commonly used in commercial refrigera- tion systems. The MRLDS communicates with the E2 controller via a Gateway board connected to the RS485 I/O Network, or via the analog input on a MultiFlex board. 1.1 Specifications *De-icer: for environments below 32°F to keep ice from forming on the surface of enclosure. 1.2 MRLDS Models 1.3 Powering The MRLDS The MRLDS unit requires a separate UL Listed/CSA Certified 24VAC Class 2 transformer power supply. One 24VAC, 10VA Class 2 transformer is sufficient for up to three (3) MRLDS units. CPC supplies several sizes of transformers for power- ing multiple MRLDS units (three or more). Note that polarity must be maintained when connecting more than one MRLDS to a single transformer. Power Require- ments 24 VAC, ±20%, 50/60 Hz, Class 2 Wiring 14 AWG max, Class 2 copper wir- ing Power Consump- tion Less than 2.7 watts Output Options 1-5V, 10 K Ohm load RS485 Modbus RTU Operating Temp. 32 to 149°F (-22 to 149°F with de-icer*) 0 to 65°C (-30 to 65°C with de-icer*) Humidity 0 to 99% non-condensing Size 4.5” x 3.5” x 1.6” Weight .35 lbs. (160 g) Pollution Degree 2 Installation Cate- gory II Range 0 to 1000 ppm Minimum Detec- tion 25 ppm Pressure Operating 10.2 to 15.7 PSIA Repeatability ±10 ppm at 50 ppm Linearity ±10 ppm from 25-50 ppm, ±20% of reading from 60 to 1000 ppm Warm-up Time 30 minutes Table 1-1 - MRLDS Unit Specifications Figure 1-1 - Sensor Base Opening With Screw Terminals Part Number Description 809-1000 Voltage Out w/o de-icer* 809-1001 Voltage Out w/ de-icer* 809-1010 Modbus w/o de-icer* 809-1011 Modbus w/ de-icer* Table 1-2 - Available MRLDS Models Part Number Transformer Description Number of MRLDS Units Powered 640-0039 24VAC, 10VA Class 2 Up to 3 Table 1-3 - MRLDS Transformer Specifications WARNING: The MRLDS unit must be always be powered by either a suitable UL 60950/CSA Certified power supply that is isolated from line voltage by double insulation, or an appropriately rated UL Listed/CSA Class 2 transformer. Failure to follow the above can result in serious personal injury or death.

026-1307 Rev 1 11-30-07 2 Choosing a Mounting Location Proper location of the refrigerant sensor is necessary to ensure accurate measurement of representative air sam- ples. Mount the sensor: • Indoors, inside a room area where air circulates freely. • On a flat, interior surface. • Approximately 12-18 inches (30-45 cm) from the floor. Do not mount the sensor: • On surfaces in unheated areas (less than 0°C), unless using a model with a de-icer. • Near heat sources, such as appliances, direct sunlight, or concealed pipes or chimneys. • On walls subject to excessive vibration. • In the direct path of an exhaust fan. Excessive air movement will disperse gas before it can be detected. If mounting in the path of excessive airflow cannot be avoided, it will be necessary to turn OFF air circulation for 1/4 to 1/2 hour, 4-6 times a day. 2.1 Mounting The Sensor The refrigeration monitor comprises two basic parts: the base and the cover. The cover incorporates the circuit board with the sensing elements. 1. Fasten the base to a junction box or other support. The base has a number of openings to allow for mounting to various junction boxes. 2. Feed the power and signal wires through the rect- angular opening in the base (Figure 1-1). 3. Connect the wires to the terminal connector located in the base, as indicated in Figure 4-2 and Figure 3-2. 4. The Modbus MRLDS must be connected to earth ground. Connect earth ground to the MRLDS ground terminal labeled . Connect to earth ground with 14 AWG wire that is less than 6 inches. 5. Align the two side tabs of the cover with the base and snap the cover onto the base. 6. Verify the cover is securely attached to the base by pulling on the top and bottom of the cover as shown in Figure 2-2. Figure 1-2 - Powering Multiple MRLDS Units NOTE: For example, if mounted inside a motor room, exhaust fans must be shut off during the intervals that air samples will be tested for refrigerant levels. 120VAC 24VAC ACN Transformer MRLDS I MRLDS II If a transformer is shared between MRLDS units, the “ACN” of each MRLDS must be wired to the same phase of the transformer. Figure 2-1 - Sensor Base And Cover NOTE: To remove the cover, grasp it along the recesses and pull it away from the base (Figure 2-2). Alternatively, place a screwdriver into the slots indicated in Figure 2-2 and twist.

2.2 MRLDS Dimensions 3 MRLDS Analog Version (809-100x) 3.1 Network Layout 3.2 MRLDS Wiring For analog MRLDS units, connect to a MultiFlex board via the analog input (use Belden 8761 cable). Figure 2-2 - Attaching and Removing Cover Figure 2-3 - MRLDS Mounting Dimensions Figure 3-1 - Analog MRLDS Network Layout Example Figure 3-2 - Analog MRLDS Wiring E2 MRLDS Units I/O Net MultiFlex Board To Other I/O Net Devices ANALOG MRLDS - INSIDE LOWER PORTION OF BASE MULTIFLEX BOARD - LOWER RIGHT CORNER INPUT 13 INPUT 14 INPUT 15 INPUT 16 1 2 3 4 5 6 7 8 0V SIG 0V SIG SIG SIG 0V 0V ACN 24VAC GAS(+) OUT(V) TO 24VAC, 10VA CLASS 2 POWER SUPPLY Analog MRLDS to MultiFlex A transformer must be shared between MRLDS and the MultiFlex board. A must be used. If a transformer is shared between MRLDS units, the “ACN” of each MRLDS must be wired to the same phase of the transformer. never separate transformer SIG 0V Ground OUT(V) Ground EARTH SHIELD NEAR THE MULTIFLEX BOARD. CONNECT THE SHIELD TO THE 0V INPUT ON THE MULTIFLEX BOARD. DO NOT Wire MultiFlex SIG to MRLDS OUT(V). Wire MultiFlex 0V to MRLDS Ground ( ). BELDEN 8761 BELDEN 8761

026-1307 Rev 1 11-30-07 3.3 Refrigerant Jumper Settings The jumper settings for refrigerant types are located on the label inside the MRLDS sensor cover (shown in Fig- ure 1-1). Set the jumpers according to how they are indi- cated on the label. The MRLDS supports three different refrigerant types. Select the desired refrigerant type by setting one jumper to the J2 or J1 sockets (Figure 2-1) respective per the inside label. 3.4 Controller Setup For Analog MRLDS 3.4.1 E2 Controllers Version 2.5 and Newer 1. Log in to the E2 controller. 2. Press the Menu button to open the Main Menu. 3. Select 7. System Configuration. 4. Select 1. Input Definitions. 5. Select the board/point input. 6. Press F1 Setup. 7. Select Analog Sensor. 8. On the Analog Input screen, select MRLDS Refr. as the Sensor Type. The parameters are then automatically configured for you. 9. Press the J (Back) button to save changes. If the device is configured and powered correctly, a value will be visible under the Value column on the Input Status screen. 3.4.2 Einstein/E2 Controllers Prior to Version 2.5 For Einstein and E2 controllers prior to version 2.5, follow the steps below, set the sensor type to Linear, and manually enter the parameters: 1. Log into the E2 controller. 2. Press the Menu button to open the Main Menu. 3. Select 7. System Configuration. 4. Select 1. Input Definitions. 5. Select the board/point input. 6. Press F1 Setup. 7. Manually enter the following parameters on the Input Setup screen: •Sensor Type: Linear •Low End Point: 0.8V •Low Eng. Units: -50 •Select Eng. Units: PPM •HighEnd Point: 5.5V •High Eng. Units: 1125 •Low End Limit: -100 •HighEnd Limit: 1150 (Set the alarm failure to < -10PPM.) 8. Press the J (Back) button to save changes. If the device is configured and powered correctly, a value will be visible under the Value column on the Input Status screen. Figure 3-3 - Analog Jumper Layout (Inside Lower Portion of Cover) Enlarged To Show Detail Refrigerant Type J2|J1 R-22 R-404A R-134A Table 3-1 - Refrigerant Jumper Settings J2 J1 refrigerant type jumpers Analog Jumpers J2 J1

3.4.3 RMCC Controllers For RMCC-type controllers, set the Gain parameter to 250 and Offset to -1000. 4 MRLDS Modbus Version (809-101x) 4.1 Network Layout 4.2 MRLDS Setup 4.2.1 MRLDS Wiring 4.2.2 MRLDS Network Addressing Modbus network settings are set on jumpers J5, J4, and J3. Refer to Table 4-1 (also included on the inside label of the MRLDS) for network addressing with corre- sponding jumper settings. If more than one MRLDS is on the network, each unit must have a unique address and be numbered according to the inside label (Table 4-1) specifications. Figure 3-4 - Analog Input Screen Settings Example for E2 Figure 4-1 - Network Layout Example E2 Gateway MRLDS MRLDS MRLDS MRLDS I/O Net + - +- - - - - + + + + MODBUS (Up to 12 MRLDS units on the network per Gateway) Figure 4-2 - Modbus MRLDS Wiring Figure 4-3 - MRLDS Jumpers (Inside Lower Portion of Cover) RS 485 (+) RS 485 (-) ACN 24VAC MRLDS - INSIDE LOWER PORTION OF BASE EARTH GND Shield drain/ground wire MODBUS NETWORK To Gateway Board A transformer must be shared between MRLDS and the Gateway board. A must be used. If a transformer is shared between MRLDS units, the “ACN” of each MRLDS must be wired to the same phase of the transformer. never separate transformer MODBUS BELDEN 8761 14 AWG less than 6 inches J6 J5J4 J3 J2 J1 refrigerant type jumpers network address jumpers term jumper J6 J1

026-1307 Rev 1 11-30-07 4.2.3 Address Settings 4.2.4 Refrigerant Jumper Settings The jumper settings for refrigerant types are located on the label inside the MRLDS sensor cover (shown in Fig- ure 1-1). Set the jumpers according to how they are indi- cated on the label. The MRLDS supports three different refrigerant types. Select the desired refrigerant type by setting one jumper to the J2 or J1 sockets respective per the inside label. 4.2.5 MRLDS Termination The MRLDS has a built-in, on-board means of termi- nation, so an external termination block is not necessary for terminating. When the device is located at the end of a daisy chain, jumper JP6 for termination. 4.2.6 Modbus Output See Table 4-3 below for Modbus registers in the MRLDS Unit. Baud rate: 19,200; each byte is 8 (eight) Modbus Address Jumper Settings J5|J4|J3 100 No jumpers installed 101 102 103 104 105 106 107 108 109 110 111 Table 4-1 - MRLDS Modbus Address Jumper Settings Figure 4-4 - Modbus Jumper Layout (Inside Lower Portion of Cover) Enlarged To Show Detail Refrigerant Type J2|J1 R-22 R-404A R-134A Table 4-2 - Refrigerant Jumper Settings Figure 4-5 - MRLDS Termination (Inside Lower Left of Cover) J6 J5J4 J3 J2 J1 refrigerant type jumpers network address jumpers term jumper J6 J1 J6 J5J4 J3 J2 J1 Termination jumper J6 J1

bits with no parity and 2 (two) stop bits. 4.3 MRLDS Gateway 4.3.1 MRLDS Gateway Setup on I/O Network Modbus versions of the MRLDS must be connected to the 810-3040 MRLDS Gateway. The MRLDS Gateway can be mapped in either of two ways: it can be set up on I/O Net as an IRLDS application or as a 16AI board. Select by setting the Gateway’s dip switch #5 to the OFF or ON position (Figure 4-6). 4.3.2 Gateway Connections Up to 12 MRLDS units may be connected to the Gate- way board (P/N 810-3040). The Gateway board can inter- face with a site controller as a 16AI or as an IRLDS. If the site controller is an Einstein or E2, it is recommended to interface them as an IRLDS. Multiple Gateways can be used, each with up to 12 connected MRLDS units. 4.3.3 The Gateway Board Register Name PDU Address Logical Address Range Fault and Module State 0x0000 1 Under Range 2 (msb) Under Volt- age 8 (msb) Temperature 10 (msb) Lamp Fail 40 (msb) Test Mode 80 (msb) Warm Up Complete 0 (Lsb) Cal/Setup 2 (Lsb) Factory Mode 4 (Lsb) Trouble Mode 8 (Lsb) Gas Number 0x0001 2 0 to 40 Gas Con- centration 0x0002 3 -20 to 1050 (ppm) Gas Numbers R-22 = 6 R-404A = 27 R-134a = 15 Table 4-3 - RS485 Output Specifications Figure 4-6 - I/O Network Modes Figure 4-7 - MRLDS Gateway Board Layout (810-3040) SELECT I/O NET MODE OFF = IRLDS ON = 16AI ON = 16AI OFF = IRLDS ON

026-1307 Rev 1 11-30-07 The Gateway Board communicates with the MRLDS via the Modbus network, which is connected to the Gate- way’s “Receiver Bus” network terminal. The Gateway communicates with the E2 via the RS485 I/O Network. 4.3.4 Powering the Gateway Board The Gateway board requires 24VAC power from a Class 2 center-tapped transformer. CPC supplies several sizes of center-tapped transformers for powering multiple 16AIs, 8ROs, and other RS485 peripheral boards. Figure 4-8 shows how to connect the 56VA and 80VA transformers to the Gateway power connector. 4.3.5 Connecting the Gateway Board to the Einstein or REFLECS Network Each E2, Einstein, or REFLECS site controller that will communicate with one or more MRLDS units must have a Gateway Board installed on its RS485 I/O Net- work. For Einstein controllers, this means the Gateway will be installed on the RS485 I/O Network; for RMCC, BEC, BCU, and other REFLECS products, the Gateway will be installed on the COM A or COM D network. 4.3.6 Wire Connections Using shielded three-conductor network cable (Belden #8641 or equivalent), connect the RS485 I/O Network wire to the three-terminal connector on the Gateway board as shown in Figure 4-9. For further information about how RS485 networks are configured, refer to your site CAUTION: Before installing the Gateway board, verify the jumper JP7 (located near the top center of the board) is set to the “NOR- MAL” position (not the “TEST” position). Operating the Gateway with the jumper in “TEST” position may cause board damage. Input Voltage 24VAC, Class 2, Center-Tapped 50/60Hz Power 5VA Table 4-4 - Gateway Power Requirements Three-Board Six-Board P/N 640-0056 640-0080 Power Rating 56 VA 80 VA Table 4-5 - Power Ratings for CPC Transformers Figure 4-8 - Pinout for the 56VA (640-0056) and 80VA (640- 0080) Transformers CAUTION: The MRLDS unit requires a sepa- rate Class 2, 24VAC, 10VA power supply.

controller’s user manual. To connect the Gateway to an MRLDS, feed the wires through the rectangular opening in the sensor base as indi- cated in Figure 1-1. Locate the RS485 connector and secure the wire leads to the connector orienting them as shown in Figure 4-10. Connect multiple MRLDS units in a daisy-chain configuration as shown in Figure 4-1. 4.3.7 Termination Settings As part of a site controller’s RS485 I/O (COM A or COM D) Network, a Gateway must be terminated if it is the end device of a daisy chain. The Gateway on the Mod- bus Network should always be terminated and always located at the end of the daisy chain. Refer to the site controller’s user manual for informa- tion about daisy chain networks and how they are termi- nated. To terminate the Gateway (the Modbus jumpers should always be terminated on the Gateway), set the receiver bus jumpers to the RIGHT position (Figure 4-11). 4.3.8 Gateway Board I/O Net Addressing Set the address on the I/O Network with switches 1-4. There can be more than one MRLDS Gateway with each supporting up to 12 MRLDS units. Switch 5 indicates whether the MRLDS will be mapped as an IRLDS or 16AI. Set switch 5 to the OFF position for IRLDS emulation or to the ON position for 16AI emulation. Figure 4-9 - Connecting the Gateway to the E2 RS485 Network Figure 4-10 - Connecting the Gateway to MODBUS GATEWAY BOARD -485 +485 0v To MRLDS MODBUS A B RS 485+ RS 485- ACN 24VAC MRLDS - INSIDE LOWER PORTION OF BASE GATEWAY BOARD +485 -485 0v +485 -485 0v EARTH GND Shield drain/ground wire Shield drain/ ground wire MODBUS NETWORK Figure 4-11 -MRLDS Gateway Termination Figure 4-12 - Network Layout Example RS485 I/O NET (TO CPC CONTROLLER) RS485 I/O NET TERM JUMPERS TERMINATION (ALWAYS TERMINATE) 14 15 ADDRESS ON I/O NET I/O NET MODE ON = 16AI OFF = IRLDS

026-1307 Rev 1 11-30-07 4.3.9 Setting the Baud Rate Dip Switches Dip switches 6 and 7 control the baud rate at which the Gateway communicates with the site controller on the RS485 Network. These switches must be set to the same baud rate setting as the controller you are using (Einstein, RMCC, or E2), and defaults to 9600 baud. Dip switch 8 controls the baud rate at which the Gateway communicates with the MRLDS. For 9600 baud, set dip switch 8 to the OFF position. For 19200 baud, set dip switch 8 to the ON position (always use 19200 baud for MRLDS). 4.3.10 Hand-Held Terminal Set- tings The hand-held terminal can be used to view status information, enable unit addresses, and is connected directly to the Gateway board via the hand-held terminal jack. 4.3.10.1 MRLDS Setup From the HHT Home screen (F1), press the down arrow key to navigate to the Baud Rate/Address screen (Figure 4-15). The Baud Rate/Address screen displays the Gateway I/O Network address (I/O ADDR), the I/O Network baud rate between the Gateway and the E2 (I/O BAUD), and the Modbus baud rate between the Gateway and the MRLDS devices (MOD BAUD). 4.3.10.2 Select Screen Press the down arrow again to navigate to the Select screen (or press F2). From the Select screen you can see status, setup, and firmware version information. To select, press the right arrow until it appears next to SELECT and press 1, 2, or 3 in the list. Press the down arrow twice to move to the desired screen. 4.3.10.3 Status Screen 1 - The Status screen displays general status informa- tion about the MRLDS such as device numbering, count information (gas concentration in ppm), the type of refrig- erant gas being monitored (MRLDS jumpers set by the user), and whether an alarm has been issued. An alarm indicates an MRLDS failure and that the MRLDS should be replaced. Call the CPC Service Department (770-425- 2724) to verify if the MRLDS unit should be replaced. Possible states (ST) are: • WARMUP - MRLDS is warming up. • NORMAL - MRLDS has completed warm-up and is operating normally. • OFFLINE - MRLDS has lost communication. • UNUSED - This address is not being used. • FAIL - MRLDS has reported a fail state. Check the ALM field for specification. Figure 4-13 - Dip Switch Settings for Gateway Baud Rate Figure 4-14 - MRLDS HHT Home Screen GATEWAY DIP SWITCH I/O NETWORK OR COM A AND D BAUD RATE I/O NET BAUD RATE SETTINGS 2 3 4 5 6 7 8 1 9600 19200 OFF = 9600 BAUD ON MODBUS ON = 19200 BAUD ON MODBUS ON (GW to E2) (GW to MRLDS) ALWAYS USE 19200 BAUD WITH MRLDS MRLDS GATEWAY 810-3040 VER:1.10B03 ( PRESS ) FAIL I/O NET Figure 4-15 - Baud Rate/Address Screen Figure 4-16 - Select Screen I/O ADDR: 1 FAIL I/O NET MOD BAUD: 19200 I/O BAUD: 9600 SELECT: 1 FAIL I/O NET 2 - SETUP/ONLINE 3 - FW REVISION 1 - STATUS

MRLDS Modbus Version (809-101x) • 11 4.3.10.4 Setup/Online Screen 2 - The Setup/Online screen displays the addressing of the devices and whether they are enabled. Press the right/ left arrows to select the first address in the list. Toggle the minus button to enable the first address in the list (Figure 4-18). If communication is established, the screen will show “ON-L” indicating the unit is set up and online. 4.3.10.5 Firmware Revision Screen 3 - The Firmware Revision screen displays the address of the MRLDS unit with its associated firmware revision. 4.3.11 Gateway Troubleshooting If there is an issue with the Gateway board, the HHT Home screen (F1) can give status indicators to report the issue. The Home screen will display a warning if there is a failure associated with the I/O Network or flash on the Gateway board. Select the HHT Status screen to view sta- tus information for each MRLDS unit. 4.4 Controller Setup for Modbus MRLDS 4.4.1 Mapping The MRLDS as an IRLDS Application To set up communication on the I/O Network as an IRLDS application: 1. Log in to the E2 controller. 2. Press the Menu button to open the Main Menu. 3. Select 7. System Configuration. 4. Select 7. Network Setup. 5. Select 2. Connected I/O Boards & Controllers and add the desired number of MRLDS Gate- ways as IRLDS under I/O Net Devices. Up to 12 units can be connected to each Gateway. 6. Press the J (Back) button and select 1. Online Status (Alt + N) to check the status. 7. Go into the IRLDS application under General Setup and add the number of MRLDS units (Num Channels field) connected to the Gateway. 4.4.2 Designating MRLDS as a 16AI Board 1. Log in to the E2 controller. 2. Press the Menu button to open the Main Menu. 3. Select 7. System Configuration. 4. Select 7. Network Setup. 5. Select 2. Connected I/O Boards & Controllers and add the desired number of 16AI boards under I/O Net Devices. 6. Press the J (Back) button and select 1. Online Status (Alt + N) to check the status. For mapping the MRLDS unit as a 16AI board, first set dip switch #5 on the Gateway board to the ON position. Follow Steps 1-6 above, but for Step 6 select the num- ber of 16AI boards to equal the number of MRLDS Gate- Figure 4-17 - Status Screen NOTE: If the HHT displays any type of alarm, contact the CPC Service Department (770-425- 2724) to verify if the MRLDS unit should be replaced. Figure 4-18 - Setup/Online Screen NOTE: For IRLDS mode, disable unused addresses by toggling the minus key to DISABLE. Unused addresses that have not been disabled may cause a false failure on the E2. Figure 4-19 - Firmware Revision Screen 100: CNT: 1 ST: NORMAL FAIL I/O NET ALM: NONE GAS: R134A 100: ENBLE ON-L :: FAIL I/O NET 103 104: 102: 100: ENABLE 1.12 FAIL I/O NET 103: ------ 104: ------ 102: ------

026-1307 Rev 1 11-30-07 ways. Navigate to the controller’s Input Status screen and highlight the board and point that you wish to map. Press F1 to go to the Input Setup screen for that board/point. Each point will increase incrementally to correspond with each board. (For example, where the MRLDS is address 1 and the MRLDS address is 100, use board 1, point 1. For an MRLDS address of 101, use point 2.) 4.4.3 E2/Einstein Controllers Next, set up the following parameters on the Input Setup screen: • Sensor Type: Linear • Low End Point: 0.00000 • Select Eng. Units: PPM • HighEnd Point: 4.80000 • High Eng. Units: 1200.0000 4.4.4 RMCC Controllers Version 2.1 and Newer 4.4.4.1 REFLECS Setup for IRLDS IIs Set dip switch 8 to ON and follow the steps for setting up IRLDS IIs through the REFLECS controller interface: 1. Log on. 2. Press 7 for Configuration to reach the CON- FIGURATION screen. Input Definitions should be set here to show how the sensor control is linked to the zone. The number of devices and IRLDS IIs are connected to the Gateway and enabled is the number of address slots the Gateway will use. 3. Press 1 for Input Definitions to reach the INPUT DEFINITIONS screen. 4. Pressing the down arrow several times will get you to the input list of SENS01-48. Bd (board) is the address of the Gateway, Pt (point) is the zone and allows you to define where the sensor input comes from. The board number for the IRLDS II setup is the address of the Gateway. If there are three or less IRLDS II control- lers connected to a Gateway, the Gateway address = the IRLDS II address. However, if there are more than three IRLDS controllers, the second Gateway address will be the one entered for the board number, but the IRLDS II con- trollers are set 1 to 3 on the second Gateway. 5. Press 0 (zero) to go back to the CONFIGU- RATION screen. 6. Press 7 for I/O Brd Setup to reach the I/O BOARD MENU screen. 7. Press 2 to Set Device #’s. The Gateway will react as three 16AI boards. The num- ber of IRLDS II controllers plus the real number of 16AIs = the total number of 16AIs to enter in the next step: 8. At the I/O BOARD DEVICE NUMBERS screen, press the down arrow key to reach Number 16AI Boards and enter the number of how many 16AI boards and IRLDS II con- trollers there are. Press Enter. 9. Arrow down to the I/O BOARD MENU and press 0 (zero) twice to go back to the MAIN MENU screen. 10. Press 4 for Sensor Control. 11. Press 2 for Setup--up to 48 sensor control programs are allowed. Select one of the 48 units and press Enter to reach the SENSOR SETUP screen. 12. Press the right arrow to move to the Name Figure 4-20 - Analog Input Screen Settings Example for E2

MRLDS Modbus Version (809-101x) • 13 field to change the name, and press the down or right arrow to move to the (sensor) Type field. Use the “.” and “—” keys to scroll through the options and select IRLDS. (The Gain and Offset parameters are automatically configured for you.) 13. Use the arrow keys to move off the active fields and press 0 (zero) twice to go back to the main screen. 4.4.5 BEC and RMCC Controllers Less Than Version 2.1 4.4.5.1 Input Definitions Locate the screens in the BEC or RMCC that are used to define input board and points. This is usually achieved by pressing 7 then 1 from the Main Menu. Press the DOWN ARROW key several times until the SENS01- SENS08 inputs are shown. The 16AI connected to the IRLDS’s output terminals must be set up in the REFLECS’s system software. If the 16AI was given a unique board number by setting the dip switch S3, and wired to the terminals so that each zone number corresponds to a 16AI point number (zone 01 con- nected to point 01, for example), these board and point ad- dresses must now be entered into the REFLECS. The screen above shows how the board and point ad- dresses for zone 1 would be set up for a 16AI board num- bered 1. Both SENS01 and SENS02 are set up as 01:01 so that SENS01 can monitor concentration and SENS02 can monitor fault status. Set up the remaining sensors using the instructions giv- en above. For each point on the 16AI, set up two sensors with the same addresses. 4.4.5.2 Sensor Setup Locate the screen in the BEC or RMCC where sensors are set up. This is usually a menu option in the Sensors Menu, which may be reached from the Main Menu. The 0-4.8V signal is a linear signal representing a mea- sured concentration of 0-1200 ppm, and a voltage of 5.0V indicates a fault. In order for the REFLECS to read these voltages correctly, the REFLECS sensor inputs must be configured as linear sensors. Name A name for the sensor input may be entered in the Name field. Since each IRLDS zone is set up with two REFLECS sensor inputs, choose names for each input that distinguish the input’s function. For example, the sensor input set up to read leak concentrations on zone 1 should have a name like REFR LK ZN 01, and the input set up to monitor fault sta- tus should have a name like FAULT ZN 01. Type All sensor inputs connected to an IRLDS should be set up as linear sensors. Enter (L)inear in the Type field. Logging Interval The logging interval is the amount of time between log entries in the REFLECS’s Data Log. When choosing a logging interval, keep in mind the amount of time it takes an IRLDS to go through an entire cycle of samplings. For example, a 16-valve IRLDS with 30 second sampling times for each zone takes a total of eight minutes to sample all zones. Choosing a logging in- terval smaller than the IRLDS’s cycle time will simply clutter the REFLECS data log with multiple copies of the same sample. 4.4.5.3 Sensor Setpoints Locate the screen in the BEC or RMCC where sensor set points are specified. This is usually a menu option in the Sensors Menu, which may be reached from the Main Menu. After the linear sensors have been set up, the REFLECS must be told how to interpret the linear voltage given by the IRLDS. Eng. Unit The REFLECS does not require any specific engineer- ing unit to be specified for sensor values. However, for eas- ier reading of status screens and data logs, “PPM” should be entered for sensor inputs that read concentration, and SENSOR SETUP 12:00 #:01 Status:OFF Name:REFR LK ZN 01 Type: Linear (T)mp (1)00 (5)00 (R)fLeak (K)Watt (H)um (2)00 (D)ig (L)inear L(Q)Lev (6)450 Tmp Dew(P)nt Logging Interval (HH:MM:SS): 00:03:00 =PREV =NEXT ->=SET-DATA 0=MENU SENSOR SETPOINTS LINEAR INPUT 12:00 #:01 Status:OFF Name:REFR LK ZN 01 Stay ON for:000 min Eng.Unit:PPM Using Diff Of 01 00 00 00 0 Of 0 0 0 0 Gain 250 Offset 00000 mv ON: 0 Dly: 0000 OFF:0 Dly:0000 =PREV =NEXT ->=SET-DATA 0=MENU

026-1307 Rev 1 11-30-07 “MV” should be entered for sensor inputs that read fault status. Gain and Offset Since the output terminals emit one volt for every 250 ppm of refrigerant detected, the gain for the refrigerant leak sensors must be set to 250 and the Offset to 0. The sensors configured to detect faults must be given a gain of 1000; this way, the REFLECS can be set up to alarm whenever it detects a 5000 mV signal. 4.4.5.4 Alarm Setpoints Locate the screen in the BEC or RMCC where sensor alarm set points are specified. This is usually a menu option in the Sensors Menu, which may be reached from the Main Menu. The REFLECS should now be capable of interpreting the 0-4.8V output voltage as a refrigerant concentration of 0-1200 ppm and the 5V output voltage as a fault. The de- sired alarm set points must now be specified. When set up correctly, alarms will appear in the REFLECS Alarm log as “Hi Sensor” alarms (refer to the REFLECS manual for alarm descriptions). Alarms: High In this field, specify a high alarm setpoint for refriger- ant leak alarms between 0 and 1200 ppm. For fault status alarms, enter a setpoint of 4960 mV (slightly below 5V, as a precautionary measure). Alarms/Notices Dly The value entered in the Alarms Dly field is the number of minutes the sensor reading must be above the Alarms:High set point before the REFLECS may generate a leak alarm When choosing an alarm delay, keep in mind the amount of time it takes an IRLDS to complete a sampling cycle. For example, a 16-valve IRLDS with 30 second sam- pling times for each zone takes a total of eight minutes to sample all zones. Choosing an alarm delay smaller than the IRLDS’s cycle time will cause an alarm to be generated af- ter only one high reading is taken. 5 Diagnostics 5.1 MRLDS LED Indica- tors The MRLDS has three LEDs for quick status indica- tion. For analog output models, a fault is signaled by setting the voltage to 0.5V, which indicates the MRLDS should be be replaced. Call the CPC Service Department (770-425- 2724) to verify if the MRLDS unit should be replaced. 5.2 E2 Alarming 5.2.1 IRLDS Mode If any one or all of the MRLDS sensors encounters a problem, the IRLDS application will alarm and all cell outputs will show NONE. For details on which individual unit is in alarm, go to the MRLDS Gateway and check the Status screen on the HHT. 5.2.2 16AI Mode If an MRLDS has lost communication, the input will go to 1250 PPM, which should force an alarm if enabled. If all MRLDS sensors lose communication, the 16AI will go offline. Check the Status screen on the HHT for details. MRLDS LEDs STATUS INDICATION Green Lights during normal operation Red Flashes at 0.5 Hz during start-up Turns ON solid if concentration reading exceeds 50 ppm Yellow Flashes at 0.5 Hz if power sup- plied is outside set limits Turns ON solid during other fault conditions Table 5-1 - MRLDS LED Status