Owner's manual

2.1.5.2 Wiring Outputs
This wiDR has two factory installed outputs. The SPDT Mechanical Relay, SPST
Solid State Relay, Pulse and Analog Output Connection are shown below.
Figure 2.7
a) Mechanical Relay and SSR b) Pulse and Analog
Outputs Wiring Hookup Outputs Wiring Hookup
This device has snubber circuits designed to protect the contacts of the
mechanical relays when it switches to inductive loads (i.e. solenoids, relays).
These snubbers are internally connected between the Common (C) and
Normally Open (NO) relay contacts of Output 1 and Output 2.
If you have an inductive load connected between Common (C) and
Normally Closed (NC) contacts of the mechanical relays and you want to
protect them from the rush current during the switching period, you have
to connect an external snubber circuit between Common (C) and
Normally Closed (NC) contacts as indicated in the figure below.
Figure 2.8 Snubber Circuits Wiring Hookup
RC CIRCUIT
OR
VARISTOR
275 V
C
NC
NO
C
NC
NO
OUTPUT 1 OUTPUT 2
100
1/4 W
0.033
SSR
RELAY
External
Load
External
Load
0.5 A (T)
3 A (T)
C
NO
C
NC
NO
OUTPUT 1 OUTPUT 2 OUTPUT 1 OUTPUT 2
RETURN
PULSE
RETURN
VOLTAGE
CURRENT
ANALOG
(OUTPUT 1
ONLY)
PULSE
11