9
3.6 Icon
Definitions
Symbol Publication
Description
IEC 417, No.5019
Protective Conductor
Terminal
IEC 417, No. 5007
On (Supply)
IEC 417, No. 5008
Off (Supply)
ISO 3864, No. B.3.6
Caution, risk of electric shock
ISO 3864, No. B.3.1
Caution
3.7 Electrical
Installation
Based on the model number, the following voltages are required:
WCU310-1xx
120 VAC, 50/60 Hz
WCU310-4xx
120 VAC, 50/60 Hz
WCU310-5xx
240 VAC, 50/60 Hz
The various standard wiring options are shown below. Your WCU series controller
will arrive from the factory prewired or ready for hardwiring. Depending on your
configuration of controller options, you may be required to hardwire some or all of
the input/output devices. Refer to figures 3 and 4 for circuit board layout and wiring.
Note: When wiring the optional 4-20 mA output or a remote flow switch, it is
advisable to use stranded, shielded, twisted pair wire between 22-26 AWG. Shield
should be terminated at the controller ground stud (see figure 4).
