Watlow Series 942 - Manual (Page 18)

Install and Wire, Chapter 2
18 WATLOW Series 942 User's Manual
Auxiliary Wiring
Load
Fuse
L1
L2
26
27
Process, 0-5VDC, Non-Isolated
Mechanical Relay, Form A or B, 6 Amp
25
24
External
Load
-
+
+
-
Output #4
Output #3
Load impedance 10K
Ω
mimimum.
Mechanical Relay
The electromechanical relay is an electrical and mechanical device with moving parts.
When power is applied to the relay solenoid, contact closure is created through movement of
the "common" contact of the relay.
NOTE:
This output is sup-
plied with an arc
suppression snub-
ber across the out-
put terminals. High
impedance loads
may remain ener-
gized even though
the output device is
turned OFF.
Figure 27 -
Auxiliary Option 4
Wiring.
Figure 26 -
Auxiliary Option 3
Wiring.
Mechanical Relay, 6 Amp, Form A or B/0 - 5VDC Retransmit
Model # 942A- _ _ _ 3 - _ 000
Mechanical Relay, 6 Amp, Form A or B/4 - 20mA Retransmit
Model # 942A- _ _ _ 4 - _ 000
Output #4
Output #3
Load
Fuse
L1
L2
26
27
Mechanical Relay, Form A or B, 6 Amp
25
24
Process, 4-20 mA, Non-Isolated
External
Load -
+
I
DC
+
-
Load impedance 600
Ω
maximum.