Precision Digital PD6200 - Manual (Page 66)

Model PD6200 Analog Input Rate/Totalizer Instruction Manual
66
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 indi-
cating 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).