XZR250 User’s Manual
Michell Instruments
5
INSTALLATION
9. Connect the wires as follows (refer to Figure 4 below):
Figure 4
Connector Pins
Power Supply
PIN 1: 24V DC
PIN 2: OV
RS485 Output
PIN 3: A
PIN 4: B
Analog Output
The mA outputs are powered with 24V excitation voltage and the maximum loop load
resistance for mA output 550 Ω
PIN 5: Analog GND
PIN 6: Analog Out1
PIN 7: Analog Out2 (If fitted)
Relay (alarm) Contacts
PIN 8: Relay 1 N/O
PIN 9: Relay 1 Common
PIN 10: Relay 2 (Fault alarm) N/O
PIN 11: Relay 2 (Fault alarm) Common
NOTE:
Relays are supplied normally open (N/O) as standard but can be ordered as normally
closed (N/C) if preferred.
10. Carefully pull the cable back though the gland until the connector and board are
aligned.
11. Fit the connector to the board.
