Compax3 device description
High power devices
28
192-120149 N08 June 2014
3.4.8.
Braking resistor / supply voltage C3H
The energy generated during braking operation is absorbed by the Compax3
storage capacity.
If this capacity is too small, the braking energy must be drained via a braking resistor.
3.4.8.1
Connect braking resistor C3H
Connection of braking resistor
figure
PIN
Designation
DBR+
+ Braking resistor
DBR-
- Braking resistor
Braking operation of Compax3HxxxV4
Controller type
H050V4
H090V4
H125V4
H155V4
Capacitance / storable energy
400V / 480V
2600
µ
F
602 / 419 Ws
3150
µ
F
729 / 507 Ws
5000
µ
F
1158 / 806 Ws
5000
µ
F
1158 / 806 Ws
Minimum braking- resistance
24
Ω
15
Ω
8
Ω
8
Ω
Maximum continuous current
11 A
17 A
31 A
31 A
Minimum line cross section:
2.5mm
2
Maximum line length:
2m
Maximum output voltage:
830VDC
3.4.8.2
Power supply voltage DC C3H
Connection of power voltage DC
-figure
PIN
Description
DC+
+ DC high voltage supply
DC-
- DC high voltage supply
Do not connect any braking resistor on DC+/DC- .
Warning!
3.4.8.3
Connection of the power voltage of 2 C3H 3AC
devices
In order to improve the conditions during brake operation, the DC power voltage of 2
servo axes may be connected.
The capacity as well as the storable energy are increased; furthermore the braking
energy of one servo axis may be utilized by a second servo axis, depending on the
application.
It is not permitted to connect the power voltage in order to use one brake
circuit for two servo axes, as this function cannot be ensured reliably.
Caution! In case of non-compliance with the following instructions, the device
may be destroyed!
Note the following:
You can only connect two similar servo axes (same power supply; same rated
currents)
Connected servo axes must always be fed separately via the AC power supply.
If the external pre-fuse of one of the servo axes takes action, the second servo axis
must also be disconnected automatically.
Please connect as follows:
Servo axis 1 DC+ with servo axis 2 DC+
Servo axis 1 DC- with servo axis 2 DC-
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