GEW e-Brick 9kW - Indicators, Emergency Stop, Contactor, and Protection

Internal high voltage supplies
9/12kW 2A Anti Surge TR5 (PCB mounted)
GEW part 27266
22kW (Europe) 600V 2A 31.75mm * 6.35mm Rapid (F) ceramic fuse
GEW part 27265
22kW (Canada) 600V 2A 38mm * 10mm ceramic fuse, type CC
[33276 / 33485] GEW part 33889
Internal low voltage supplies:
24V DC 4A PolySwitch thermal fuse (PCB mounted)
Shutter motor 1A PolySwitch thermal fuse (PCB mounted)
4.4.2. Indicators
The
e -Brick has two LED indicators on the rear panel, one to show that the internal 24V
supply is on; the second indicates that the main contactor (K1) is enabled and that the
e -
Brick output is on.
4.4.3. System Emergency stop
The
e -Brick can only be enabled if the system emergency stop (E-stop) contacts on the
Press connector [P1] are closed, enabling the internal safety relay. The internal controls
monitor the E-stop status using auxiliary contacts on the safety relay; as a safety measure,
the relay can still disable the supply in the event of a control failure.
Warning! Refer to 5.4 for essential safety information relating to E-stop usage.
4.4.4. Contactor
The 3phase power to the main converter in the
e -Brick is switched on using an internal
contactor. By design, the contactor coil can only be energised when the press E-stop is
enabled and
a second relay is switched on. The second relay is switched on by the
embedded controller and is enabled from the HMI screen.
4.4.5. Temperature & cooling
Fan failure detection Generates warning to HMI
Internal temperature warning Generates warning to HMI
Over temperature trip Automatic shutdown of
e -Brick
4.4.6. Output protection
Voltage limit Output voltage is limited to a specified maximum
Current limit Output current is limited to specified maximum
Short circuit protection Output circuitry will tolerate an indefinite short circuit
Warning! Under no circumstances should either lamp output terminal be electrically connected
to chassis ground; this will invalidate the
e -Brick warranty and is likely to result in severe damage
to the e -Brick.
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