ENMET PID-Guard - Manual (Page 9)

PID-G UARD ENMET Corporation
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3.2.3 Relay Contacts
Relay contacts are available for each alarm; these are SPDT , rated at 10Amp at 110 V AC , and may be latching or non-latching
as required by the application.
They are accessed on the terminals next to each relay see Figure 5. The contact positions are noted on the circuit board next to
each terminal.
The following table is for the relays in their un-energized state. This is also the alarm condition state. Non-failsafe configured
relays in the alarm state, are the reverse of the PC board labeling. Note that the Fault(FLT) relay cannot be set to operate in a
Non-Failsafe mode. Please see Table 1 below:
Table 1 : Relay Failsafe Settings
Alarm Position
J14 (K1)Relay 1 - NO Normally Open
J14 (K1)Relay 1 - NC Normally Closed Alarm 1
J14 (K1)Relay 1 - COM Common
J15 (K2)Relay 2 - NO Normally Open
J15 (K2)Relay 2 - NC Normally Closed Alarm 2
J15 (K2)Relay 2 - COM Common
J16 (K3)Relay 3 - NO Normally Open
J16 (K3)Relay 3 - NC Normally Closed Alarm 3
J16 (K3)Relay 3 - COM Common
J17 (K4)Relay 4 - NO Normally Open
J17 (K4)Relay 4 - NC Normally Closed Fault Alarm
J17 (K4)Relay 4 - COM Common
These relay contacts can be used to operate auxiliary alarms or other functions. Auxiliary alarms should be powered from an
independent power source separate form the instrument power to avoid alarm failure due to controller malfunction. Use the
existing hole in the enclosure for a wire exit, and use appropriate cable fittings. See Figure 2. Be sure to note the location and
depth of hardware inside the enclosure.
Figure 5: Relay Terminal Connections PID-G UARD
Relay Terminals
J14, J15, J16, J17
Relays
K1, K2, K3, K4