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Emerson MRLDS manual

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Table of contents for the manual

  • Page 1

    026-1307 Rev 1 11-30-07 Modular Refrigerant Leak Detection Sensor (MRLDS) Inst allation and Operation Manual[...]

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    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 ha s been carefully chec ked and is believed to be accurate. However, Com puter Process Controls, Inc. assumes no resp onsibility for any inaccuracies t hat may be contained[...]

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    MRLDS I&O Manual Table of Contents • v Table Of Contents 1 OVERVIEW ............ .............. .............. .............. .............. .............. ............... .............. ........... .............. .............. ............. 1 1.1 S PECIFICATIONS .............. .............. ............... .............. .............. ...[...]

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    Specifications Overvi ew • 1 1 Overview CPC specs a modular refrigerant leak detection sensor (MRLDS) that continuously monitors for low levels of refrigerants most commonl y us ed 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[...]

  • Page 8

    2 • MRLDS I&O Manual 026-1307 Rev 1 11-30-07 2 Choosing a Mounting Location Proper location of the refriger ant 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-[...]

  • Page 9

    MRLDS Dimensions MRLDS Analog Version (809-100x) • 3 2.2 MRLDS Dimensions 3 MRLDS Analog V ersion (809-100x) 3.1 Network Layout 3.2 MRLDS W iring For analog MRLDS units, connect to a MultiFlex board via the analog input (use Belden 87 61 cable). Figure 2-2 - Attaching and Removing Cover Figure 2-3 - MRLDS Mounting Dimensions Figure 3-1 - Analog M[...]

  • Page 10

    4 • MRLDS I&O Manual 026-1307 Rev 1 11-30-07 3.3 R efrigerant Jumper Settings The jumper set tings for refr igerant 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 th ree different refrigerant types. Select the desired[...]

  • Page 11

    Network Layout MRLDS Mo dbus Version (809-101x) • 5 3.4.3 RMCC Controllers For RMCC-type controllers, set the Gain parame ter to 250 and Offset to -10 00 . 4M R L D S M o d b u s V ersion (809-101x) 4.1 Network Layout 4.2 MRLDS Setup 4.2.1 MRLDS W iring 4.2.2 MRLDS Network A ddressing Modbus network settings are set on jumpers J5 , J4 , and J3 . [...]

  • Page 12

    6 • MRLDS I&O Manual 026-1307 Rev 1 11-30-07 4.2.3 Address Settings 4.2.4 Refrigerant Jumper Settings The jumper set tings for refr igerant 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 th ree different refrigerant t[...]

  • Page 13

    MRLDS Gateway MRLDS Modbus Version (809-101x) • 7 bits with no parity and 2 (two) stop b its. 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 applicat ion or as a [...]

  • Page 14

    8 • MRLDS I&O Manual 026-1307 Rev 1 11-30-07 The Gateway Board commun icates 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 P owering the Gateway Board The Gateway board requires 24V AC power from a Class[...]

  • Page 15

    MRLDS Gateway MRLDS Modbus Version (809-101x) • 9 controller ’ s user manual. T o connect the Gateway to an MRLDS, feed the wires through the rectangular opening in the sen s or base as in di- 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 MRL[...]

  • Page 16

    10 • MRLDS I&O Manual 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 th e Gateway communicates w ith the site co ntroller on the RS485 Network. These switches must be set to the same baud rate setting as the controller you are usin g (Ein stein, RMCC, or E2), and defaults t[...]

  • Page 17

    Controller Setup for Modbus MRLDS 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. T ogg le the minus button to enable the first address in the list ( Figure 4-18 )[...]

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    12 • MRLDS I&O Manual 026-1307 Rev 1 11-30-07 ways. Navigate to the controller ’ s Input Status screen and highlight the board and point that yo u wish to map. Press F1 to go to the Input Setup screen for that board/ point. Each point will increase incr ementally to co rrespond with each board. ( For example, wher e the MRLDS is addr ess 1 [...]

  • Page 19

    Controller Setup for Modbus MRLDS 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 t[...]

  • Page 20

    14 • MRLDS I&O Manual 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 fo r every 250 ppm of refrigerant detect ed, the gain for the refrigeran t leak sensors must be set to 250 and the O ffset to 0. The sensors configured to det ect faults mu[...]