Watlow Series 942 - Manual (Page 12)

Install and Wire, Chapter 2
12 WATLOW Series 942 User's Manual
Output 1 Wiring
Figure 15 -
Process, 0 - 10VDC,
Output 1 Wiring.
Figure 14 -
6 Amp Mechanical
Relay, Output 1
Wiring.
Process, 0 - 10VDC, Output 1
Model # 942A - _ E _ _ - _ 000
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.
Off state impedance is 20K
Ω
minimum.
Mechanical Relay, 6 Amp, Form C, Output 1
Model # 942A - _ D _ _ - _ 000
Mechanical Relay, Form C, 6 Amp
17
16
18
N.O.
COM.
External
Load
Fuse
L1
L2
N.C.
Process Output
Proportional value determined by the control to balance the sensor input and set point. This
value will fall between 0 - 10VDC depending on the thermal characteristics of the system.
Load impedance is 10K
Ω
minimum.
Process, 0-10VDC, Non-Isolated
16
17
External
Load +
- -
+
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.