Emerson Lorain CIP 48120 AP6C55CA, User Manual

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Configuring and operating the system 53
User Manual UM6C55C (P7000597)
Lorain Power System (AP6C55CA/CB) Standard 10.00 (March 2008)
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Table 5.1 – DIP switch modules definition
Designation Function
S1 Used to select the nominal float voltage.
S2 Used to select the low voltage disconnect (LVD) threshold.
S3 Used to activate the temperature compensation (TC) and
select the slope (M/S switch is for a future enhancement).
5.3.2. Nominal float voltage adjustment
The nominal float voltage can be adjusted by means of switches 1 to 3 on the
S1 DIP switch module. Refer to Figure 5.1, Table 5.1 and Table 5.2 for the
switch selection applicable to the desired float voltage. Use an external
multimeter connected to the V+ and V– test jacks on the front panel of the
Controller CIP (refer to Figure 3.10) to monitor the voltage while making the
adjustment.
Table 5.2 – Nominal float voltage settings (S1)
Nominal Float
Voltage Settings
S1-1 S1-2 S1-3
–48.0 V dc Open Open Open
–51.0 V dc Open Open Closed
–52.0 V dc Open Closed Open
–53.0 V dc Open Closed Closed
–54.0 V dc Closed Closed Closed
–54.5 V dc Closed Open Closed
–55.0 V dc Closed Closed Open
Note: The setting in the shaded line is the factory default setting.
5.3.3. Low voltage disconnect
The Controller CIP operates the low voltage disconnect contactor and
generates an LVD alarm when the voltage reaches the selected low voltage
disconnect level, if the LVD contactor is enabled. If the low voltage
disconnect contactor is wired for load disconnect, it will completely
disconnect the load (LLVD). If the low voltage disconnect contactor is wired
for battery disconnect, it will completely disconnect the batteries (BLVD). As
the voltage rises back to normal float value, the LVD condition and alarm
should disappear when the AC comes back and the system voltage reaches –
50.5 V dc.
The low voltage disconnect level can be adjusted by means of switches 1 to 3
on the S2 DIP switch module, while the LVD contactor can be enabled by
means of the S2-4 or S1-4 switch. Refer to Figure 5.1, Table 5.1 and Table
5.3 for the switch selection applicable to the desired low voltage disconnect
level.