Typical External Alarm Relay 1 Wiring
Jumper the ‘Neutral’ line of an external power source or the monitor’s AC input to the ‘Common’ terminals on the relay connector.
Connect one end of the strobe or horn to the ‘NO’ terminal of whichever level of alarm is appropriate for the application.
The other end of the strobe or horn is connected to the other leg of the external power source. For protection, install an
4–20 mA Current Loop Interface
An external
IMPORTANT! The monitoring device must be isolated from ground (floating).
NOTE: A 100 ohm, ¼ W resistor must be connected to the
Secure the wire leads from the external monitoring device to the
The default
To facilitate loop zero and span checking, note that when the LOOP function is selected the loop output is set to 20 mA, and upon exiting this function the loop output is set to 4 mA.
4–20 mA Current Loop Connector
CAUTION: Never apply power to the
Instruction | 11 |