Delta MCS-600 Power Shelf
Installation, Operations and
Maintenance Manual
REV.: 03
3-4
Customer Specification Confidential
Table 11 displays the rectifier mechanical data.
Table 11 Rectifier Mechanical Data
Dimension Value
Height
5.2 in. (132mm)
Depth
9.57 in. (243.1mm)
Width
2.5 in. (63.6mm)
3.3 Operation and Adjustment
All operating adjustments are made at the front panel of each rectifier. The following components are located
on each rectifier panel:
1. Float
voltage
adjustment
2. Current
limit
adjustment
3. Current
test
points
4. Alarm
indicators
Figure 3 shows different indicators and adjustment points on this unit.
Rectifier adjustments must be done sequentially from the first through the fourth rectifier with AC applied. All
adjustments must be made with no load, and the batteries disconnected to ensure adjustment accuracy.
3.3.1 Start-Up
To start up the system, perform the following steps:
1.
Aproximately 3 to 8 seconds after the AC applied, the RFA LED extinguishes.
3.3.2 Float Voltage Adjustment
Verify the required float voltage setting per battery manufacturer specification. If the factory setting differs
from the battery manufacturer recommended setting, the ALU float voltage parameter and each rectifier’s
float voltage must be adjusted to the new setting. A digital multimeter and a small screwdriver are required
to perform this procedure. Located the float voltage access point (FL) at the front of the rectifier.
To adjust the float voltage, perform the following steps:
1.
Remove the ALU.
2.
Place the digital multimeter probe in the V+ and V- output voltage connecter.
3.
Adjust the float voltage by using a screwdriver to turn the FL point to the voltage value as shown on
the meter. The tolerance error should not exceed 0.02V.
Notes:
1.
Turning the variable resistor adjustment point clockwise increases the value, and counterclockwise
2.
Refer to attachment 7-1 and 7-2 (rectifier front view) for the location of V+, V- and FL point.
3.
When the setting is completed, temperature and voltage compensation must be reset to the default
value.
3.3.3 Current Limit Setting
Warning: Current limit setting is not intended to be adjusted in the field. Users should only use it for their
reference.
