BAS-SVX45F-GB
69
Commissioning/Troubleshooting in a Powered State
Current Inputs - Methods 1 or 2
2.5
3
3.5
4
4.5
1.5
0
0.5
1
2
Measured Voltage Across a Linear Current Input
Linear Current Input–mA
10
12
4
6
0
2
16
18
8
20
14
V
o
ltage Measured Across Input
–
Vdc
General Information
Checkout Procedure
Measurement
Expected Value
Method 1 capitalizes on the
very low input resistance of a
DMM in current measurement
mode. However, this method
affects the value that the
UC600 will use while controlling
outputs. When the meter is set
to current mode, the current
flowing into the UC600 circuit
will drop to zero or near zero.
Step 1
Measure AC voltage across the
current input
Vac
≈
0.0 V
AC voltage will affect further measurement
Step 2
Measure DC voltage across the
current input
Vdc
≈
0.0 V
DC voltage will affect further measurement.
Step 3
Measure DC current across the
current input
Compare to input status in Tracer TU
General Information
Checkout Procedure
Measurement
Expected Value
Method 2 is less disruptive to the
system. In voltage mode, the DMM
affects the circuit less. Additional
information is needed to translate
the voltage measured to current
flowing through the circuit.
Step 1
Measure AC voltage across the
voltage input
Vac
≈
0.0 V
AC voltage will affect further measurement
Step 2
Measure DC voltage across the
voltage termination
Refer to the chart below
