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B&C Electronics
CL 7685
3 INSTALLATION
3.1 PHYSICAL INSTALLATION
The controller may be installed close to the areas being monitored, or it may be located some distance
away in a control area.
The enclosure is designed for panel-mounting.
It should be mounted on a rigid surface, in a position protected from the possibility of damage,
excessive moisture and corrosive fumes.
The cable from the probe must be protected by a sheath and not installed near power cables.
Interruption on cables must be avoided or carried out by high insulation terminals.
When installing "in line" electrodes it is suggested to follow the specific instructions given by the
sensor's manufacturer.
3.2 ELECTRICAL INSTALLATION
All connections within the controller are made on detachable terminal strips located on the rear side.
(Fig. 2)
All power and output-recorder connections are made at the 13_ pin terminal strip, while input signal
connections are made at the 12_ pin terminal strip.
The electrical installation consists of:
Connecting the power
- connect ground to terminal 4
- connect ac power to 1 - 2 terminals if power voltage is 110 Vac
- connect ac power to 1 - 3 terminals if power voltage is 220 Vac
- if 091.404 option is installed, connect 24 Vac to 1-3 terminals
WARNINGS
- power the device by means of an isolation transformer
- avoid mains-voltage from an auto-transformer
- avoid mains voltage from a branch point with inductive loads
- separate power supply wires from signal ones
- control the mains voltage value
-
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Operator's Manual - Rev. C - 05/05
14
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