Watlow Electric Micro-Based Autotuning Control SERIES 980/985 - Manual (Page 19)

Output 1 Option “H”, O-5VDC
Model# 98_A-_H _0-0000
Process Output
Proportional value determined by the control to balance the sensor input and set point.
This value will fall between O-5VDC dependlng on your process output type.
Output 2 Option “B”, Solid State Relay
Model# 98_A-
B 0-0000
- -
Solid State Relay
Watlow’s solid state relays change state at zero volts, which is zero-cross switching.”
They are also optically isolated, which means the output circuitry is energized by
infrared light striking a photo-sensitive device. This results in virtual absence of electri-
cally generated noise, plus output to input electrical isolation. Off state impedance is
2 O K o h m s minimum.
Figure 20 -
O-5VDC, Output 1,
Option "H" Wiring
Diagram.
Figure 21 -
S.S. Relay,
Output 2, Option "B"
Wiring Diagram.
Install and Wire, Chapter 2
WATLOW Series 980/985 Users Manual 19