Precision Digital PD6060 - Manual (Page 62)

Model PD6060 Dual-Input Process Meter Instruction Manual
62
Setting Up the Interlock Relay (Force On) Feature
Relays 1-4 can be set up as interlock relays. To set up the relays for the
interlock feature:
1. Access the Setup – Relay – Action menu and set the action to off.
Act 1
r l y 1
Off
A c t 1
setup
relay
setup
rly 1
relay
2. In the Advanced features – User menu program any of the digital
inputs to Force On any of the internal relays (1-4).
user
F1
user
F On 1
dI 1
dI 1
user
3. Connect a switch or dry contact between the +5V terminal and the
corresponding digital input (dI-1 to dI-4) terminal.
1 2 3 4 5 6
+5
I1 I2 I3 I4
O1
7 8
O2 O3
9 10
O4 G
DI 1-4 DO 1-4
5 VDC GND
SW2
SW1
Interlock Relay Operation Example
Relays 1 & 2 are configured to energize (their front panel LEDs are off)
when SW1 & SW2 switches (above) are closed. If the contacts to these
digital inputs are opened, the corresponding front panel LEDs flash
indicating this condition. The processes being controlled by the interlock
relay will stop, and will re-start only after the interlock relay is re-
activated by the digital inputs (switches).