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Instruction VCM-3 On-Site Commissioning
Initial Power Up test
– Visual check
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3.1
Investigation of deviations in LED colors after initial power up
It is recommended to remedy any visible problems, if possible, before you proceed with the
remaining part of the commissioning procedure.
3.1.1
Sensor problems on connected sensors (signal inputs)
Color
Explanation
Off
Channel disabled
Green
Channel enabled, no errors
Red
Template error
Blue
Channel voltage out of defined range
Tacho out of range (for tacho channels)
Yellow (blinking)
Level 3 indication is controlled by the template (the blinking is
combined with red, green, or blue)
If there is an error indication on the channel LED it is important to know what type of sensor you are
working with. There are two types of sensors:
3.1.2
CCS (constant current supply) sensors
Color
Explanation
Blue
Sensor is connected correctly but it is outputting outside of the
allowed range.
Check the sensor’s calibration.
Check the allowed range in the template and the bias level in the tap
test.
Blue
Sensor is not connected.
Sensor is not connected correctly (S+ and S-/C interchanged).
Sensor is not grounded (S+ and S- are connected, but S- are not
connected to C).