Table 3-5 Setting 3-Step Output Current Levels; Table 3-6 Setting 5-Step Output Current Levels - Siemens L-828 Manual

L-828 CCRs LC-Type (4, 7.5, and 10 kW/6.6 A/60 Hz)
 2002 Siemens Airfield Solutions, Incorporated
All rights reserved
Adjusting Output Current
2. See Figure 2-4. Set switch S1 to next to the lowest brightness
step, and verify that the true-rms ammeter reading corresponds
to Tables 3-5 and 3-6. If the reading is not in the current value
range given in Tables 3-5 and 3-6, adjust the appropriate
potentiometer listed in the table until the correct current value is
obtained.

Table 3-5 Setting 3-Step Output Current Levels

CCR S1 Position
30
10

Table 3-6 Setting 5-Step Output Current Levels

CCR S1 Position
4
3
2
1
3. Repeat Step 2 for the remaining lower brightness step(s).
NOTE: See Figure 3-1. Potentiometers R43 (3), R44 (4), R45 (5),
R46 (6) have independent circuits, so any adjustments made on
these potentiometers will not effect the adjustment of the other
three potentiometers.
4. When the output current adjustment has been completed, turn
off the CCR. Remove shorting cable on output varistors, if used.
NOTE: Potentiometers R44 (4) and R43 (3) are used only on 5-
step CCRs. R44 and 43 have no function on a 3-step CCR.
Adjusting Overcurrent
Before adjusting the overcurrent, set up the regulator and adjust the
output current.
To adjust the overcurrent, perform the following procedure:
1. See Figure 3-7. With power off, connect a test lead across TP7
(1) and TP9 (2) on the Control PCB. This will move the trip level
for the overcurrent detection threshold from the normal
operating point of 6.93 amps to 6.6 amps.
96A0104B
Issued 6/02
Installation
(contd.)
Ammeter Reading Potentiometer
5.50
4.80
Ammeter Reading Potentiometer
5.20
4.10
3.40
2.80
R46
R45
R46
R45
R44
R43
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