Watlow 942 Series - Chapter 2; Output 1 Wiring

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Install and Wire, Chapter 2

WATLOW Series 942 User's Manual

Output 1 Wiring

Figure 18 -

Process, 0 - 5VDC,

Output 1 Wiring.

Figure 19 -

Solid State Relay

Without Contact

Suppression, Output

1 Wiring.

Process, 0 - 5VDC, Output 1

Model # 942A - _ H _ _ - _ 000

Process Output

Proportional value determined by the control to balance the sensor input and set point. This

value will fall between 0 - 5VDC depending on the thermal characteristics of the system.

Load impedance is 10KΩ minimum.

Process, 0-5VDC, Non-Isolated

External

Load

Solid State Relay Without Contact Suppression

Watlow's solid state relay changes 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 photosensitive device. This results in a virtual absence of electrically generated

noise, plus output to input electrical isolation. Off state impedance is nearly infinite and

should be used to switch high impedance non-inductive loads.

N.O.

COM.

External

Load

Fuse

Solid State Relay, Form A, 0.5 Amp

Solid State Relay Without Contact Suppression, Output 1

Model # 942A - _ K _ _ - _ 000