Watlow Series F4S/D - Manual (Page 123)

Wa t l o w S e r i e s F 4 S / D W i r i n g ■ 1 2 . 1
Chapter Twelve: Wiring
Input-to-Output Isolation . . . . . . . . . . . . . . . . . . . .12.1
Power Wiring . . . . . . . . . . . . . . . . . . . . . . . . . . . . .12.2
Sensor Installation Guidelines . . . . . . . . . . . . . . . .12.2
Input 1 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .12.3
Inputs x (2 and 3) . . . . . . . . . . . . . . . . . . . . . . . . .12.4
Digital Inputs x (1 to 4) . . . . . . . . . . . . . . . . . . . . .12.6
Outputs x (1A, 1B, 2A and 2B) . . . . . . . . . . . . . . .12.7
Retransmit and Alarm Output . . . . . . . . . . . . . . . .12.8
Digital Outputs x (1 to 8) . . . . . . . . . . . . . . . . . . . .12.9
Communications Wiring . . . . . . . . . . . . . . . . . . . . .12.10
Wiring Example . . . . . . . . . . . . . . . . . . . . . . . . . . .12.12
Wiring Notes . . . . . . . . . . . . . . . . . . . . . . . . . . . . .12.13
Wiring the Series F4
Wiring options depend on the model number, which
is printed on the label on the back of the controller .
The model number codes are explained in the
Appendix.
The labels on the sides and back of the controller
contain some basic wiring information.
Input-to-Output Isolation
The Series F4 uses optical and transformer
isolation to provide a barrier to prevent ground
loops when using grounded sensors and/or
peripheral equipment.
Here is a breakdown of the isolation barriers:
• Analog input 1 and all the digital inputs
and outputs are grouped together.
• Analog inputs 2 and 3 are grouped together.
• All the control outputs and retransmit
outputs are grouped together.
• Both alarm outputs are grouped together.
• Communications is isolated from the other
inputs and outputs.
Figure 12.1 — Isolation Blocks.
Isolation Blocks
There are no electrical connections between these blocks.
Analog Input 1
Digital Inputs
Digital Outputs
Analog Input 2 and 3
Control Outputs
Retransmit Outputs
Alarm Outputs
Communications
12