Emerson MRLDS operation manual Refrigerant Jumper Settings, Controller Setup For Analog Mrlds

3.3Refrigerant 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.

Analog Jumpers

J2 J1

J2 J1

refrigerant type jumpers

Figure 3-3- Analog Jumper Layout (Inside Lower Portion of Cover) Enlarged To Show Detail

Refrigerant Type J2J1

R-22

R-404A

R-134A

Table 3-1- Refrigerant Jumper Settings

3.4Controller Setup For Analog MRLDS

3.4.1E2 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.

3.4.2Einstein/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.

4 • MRLDS I&O Manual 026-1307 Rev 1 11-30-07