40 P2077SB/EN 2011-09 77h_PowerDistributionBox-en.fm, 06.09.2011
Power distribution box PDB-CPS…
11
11.2 General technical data
11.3 Electrical Data
11.3.1 Intermediate power circuit 380 VDC
The intermediate power circuit supplies the DGD-IS with 380 VDC.
• A safety isolating transformer converts the supply voltage to 3× 270 VAC, which is then supplied to the
CPS3.
• The processor controls two integrated relays that limit the switch-on current. The main relay switches on
after the system initializes. The intermediate circuit capacitors are charged via a resistor until the inter-
mediate circuit voltage reaches approx. 380 VDC. The resistor is then bridged via a start-up relay.
• Energy is generated when the motor brakes, which causes the voltage to increase. The braking chopper
with braking resistor integrated in the CPS3converts the excess energy into heat.
• When the circuit is switched off, the intermediate circuit capacitors is discharged via the braking resistor.
Features Data
PDB-CPS3 PDB-CPS6 PDB-CPS9
Weight lbs 125 140 155
Protection category IP54
Cooling type Convection (self-cooling)
Service life, operating h 40.000
Usability period if stored h 100,000 (approx. 11 years)
On/Off switching cycles 5.000.000
Safety requirements in accordance with
EN 964-1
Category 4
Features Data
PDB-CPS3 PDB-CPS6 PDB-CPS9
Supply voltage VAC 3 × 480 ±10%
Frequency Hz 50-60
Rated current A 3 x 4 3 x 8 3 x 12
Peak current, momentary A 3 x 20 3 x 40 3 x 60
Rated output VA 3000 6000 9000
Peak power, momentary VA 30.000 60.000 90.000
Output voltage of intermediate power circuit VDC 380 ±10 %
Nominal output current (380 VDC) A 8 16 24
Output current, maximum (5 s) A 80 160 240
Circuit breaker, 3-pin A 32 32 50
Tripping characteristic C D D
Control voltage / Output voltage VDC 24 ±10 %
Output current, maximum (24 VDC) A 5 10 20
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