Dwyer UFM - Manual (Page 12)

F - UFM
Issue 1.4 Page 12
4.5 UFM interface cable
The UFM interface cable supplied is a 6-core cable and is shown in Figure 8.
The polarity of the wires is as follows:
The un-insulated wire is the connection to the screen of the cable and should be earthed for full
immunity to electrical noise.
4.6 Connecting the UFM to the Supply
The UFM will operate within the voltage range 12 – 24 V ac/dc. Connect the external power
supply to the Brown and Blue wires of the six core cable. For full compliance with EMC
regulation a 12 V supply is recommended for domestic and light industrial applications.
4.7 Pulse Output connection
The isolated pulse output is provided by a SPNO MOSFET relay which has a maximum load
current of 500 mA and maximum load voltage of 48 V ac. The relay also provides 2500 V
isolation.
The pulse output is available at the White and Green wires. Electrically this is a volt free
contact closure.
Power
Pulse
4-20 mA
Figure 8 UFM Interface Cable
12/24 V Input (+)
12/24 V Return (-)
Pulse Output
Pulse Return
4-20 mA Output (+) (Polar Sensitive)
4-20 mA Return (-) (Polar Sensitive)
Un-insulated screen