Koei Industry Nucom Series User Manual

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15
Confirm that power is OFF before making power operation
10-2 Power operation
1. Before starting power operation, check the following if they are appropriate.
* Installation conditions
* Ambient temperature and fluid temperature
* Engagement with valve
* Positions at full close and full open
* Wiring
* Water prevention at conduit tube
* Voltage and input signals (check against specification sheet)
2. Supply power and signals.
3. Check the actuator action with input signals (4~20mA /Reverse action)
4mA 20mA 12mA
Full close Full open 50 % opening
4. Stop the actuator at an optional signal position, and you may check the control resolution referring to the
following example.
[Example]
In case of 4~20mA:
Resolution Minimum change in input signals
1/250 0.064mA
1/200 0.08mA
The resolution is normally preset at 1/250 before shipment. If necessary to change, adjust it by sensitivity
volume (See 9-4).
When raising the sensitivity volume, it is occasional that noises on signals may actuate the unit, if they are not
strictly eliminated.
After the checking is over, start operation.

Koei Industry Nucom Series Specifications

General

Brand	Koei Industry
Model	Nucom Series
Category	Controller
Language	English