
Lucent Technologies Lineage
®
2000 ECS-6U Controller J85501E-1
Issue 4 August 1998
Installation and Setup 4 - 23
2. For shunts with voltage ratings other than those listed in
Table 4-G, select the next lower voltage rating for SW1.
3. Measure plant shunt voltage with voltmeter and record the
reading.
4. Calculate the desired reading on the ECS controller using
the following formula: Display = (MSV/SVR) SCR
Where:
MSV = Measured Shunt Voltage
SVR = Shunt Voltage Rating
SCR = Shunt Current Rating
5. Close SW2-9 and adjust potentiometer R45 (calibration)
on AKC1B to display the number calculated in Step 4 on
the ECS ammeter.
If the expected plant load reading is not obtained through the
AKC1B, adjust the gain (R29) potentiometer of the AKC1B.
First, verify the plant shunt current and voltage ratings and use
Tables 4-G and 4-H DIP switch settings. Use the following
procedure to reset R48 and R29:
1. With sensing inputs J1-4 and J1-5 either open or shorted
together, verify that the output at J1-7 and J1-8 reads 0.0X
mV (X can be from 1 to 5). If it does not, you may need to
readjust the factory settings of the offset (R48)
potentiometer.
2. Connect the sensing outputs to the shunt, observing proper
polarity (J1-4 to the most negative and J1-5 to the most
positive). Measure the shunt mV drop and calculate the
plant load with the formula: (Full Scale Shunt Amps / Full
Scale Shunt mV) X Shunt mV Reading. Adjust R29 to
obtain this reading on the plant ammeter. Verify a second
time.
Table 4-G: Shunt Isolator Circuit Pack Shunt Voltage
Programming
Shunt Voltage Rating
AKC1B, SW1
1
2
3
25mV
1
1
1
50mV
1
1
0
100mV
1
0
0
150mV
0
0
0