Computer Process Controls, Inc. 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.
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.
(Figure 1-1). Connect the wires to the terminal connector located in the base, as indicated in Figure 4-2 and Figure 3-2. The Modbus MRLDS must be connected to earth ground. Connect earth ground to the MRLDS ground terminal labeled 0°C ground with 14 AWG wire that is less than 6 inches.
MultiFlex Board MRLDS Units Figure 3-1 - Analog MRLDS Network Layout Example MRLDS Wiring For analog MRLDS units, connect to a MultiFlex board via the analog input (use Belden 8761 cable). Analog MRLDS MULTIFLEX BOARD - to MultiFlex LOWER RIGHT CORNER...
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.
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.
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.
4.3.2 Gateway Connections Cal/Setup 2 (Lsb) Up to 12 MRLDS units may be connected to the Gate- Factory way board (P/N 810-3040). The Gateway board can inter- Mode face with a site controller as a 16AI or as an IRLDS. If the...
Board to the Einstein or REFLECS Network Each E2, Einstein, or REFLECS site controller that Six-Board will communicate with one or more MRLDS units must have a Gateway Board installed on its RS485 I/O Net- 640-0080 work. For Einstein controllers, this means the Gateway 80 VA will be installed on the RS485 I/O Network;...
Figure 4-9 - Connecting the Gateway to the E2 RS485 Network 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.
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).
(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-...
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...
Logging Interval (HH:MM:SS): =PREV =NEXT ->=SET-DATA Controller Setup for Modbus MRLDS 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.
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...