The Pre-Charging Function; Options - Danfoss iC7-60EA3N05-206A Operating Manual

iC7-Automation Air-cooled Enclosed Drives
Operating Guide
A Pre-charging contactor control
B Main input device control
C -QA6, Pre-charging contactor coil

10.3.7 The Pre-charging Function

The drive must be pre-charged before switching main power on to avoid high inrush current to drive capacitors.
The pre-charging function utilizes AFE control unit I/Os and relays. The pre-charging function requires auxiliary voltage for the con-
trol unit and the pre-charging circuit. Pre-charging can be operated either locally (manually or automatically) or remotely (manual-
ly). Pre-charging is enabled by activating Digital Input 2. Select the MANUAL or AUTO mode by activating/deactivating Digital Input
3 (activated = AUTO). Select remote operation by activating Digital Input 1. Connect the input device, the contactor, or the circuit
breaker, the auxiliary contacts to the control unit as described in
Connect also the cooling supervision signal from the cooling module if possible. The charging circuit is protected by fuses installed
in the fuse-switch disconnector. Turn the switch ON.
Manual operation
Enable pre-charging and switch it to MANUAL mode. Pre-charging starts by pressing the Run button on the control panel of the AFE
module. The pre-charging contactor closes. When charging is done, the main input device closes and the pre-charging contactor
opens. Charging must be performed again after power outage.
Auto operation
Enable pre-charging and switch it to AUTO mode. Pre-charging starts immediately. The pre-charging contactor closes. When charg-
ing is done, the main input device closes and the pre-charging contactor opens. Charging is performed automatically after power
outage.
Remote operation
Enable pre-charging and set it to MANUAL mode. Pre-charging starts by activating Digital Input 1. The AFE module starts and the
pre-charging contactor closes. When charging is done, the main input device closes and the pre-charging contactor opens. Charg-
ing must be performed again after power outage.

10.4 Options

Table 32: Options for the Enclosed Drives
Option group
Input options
Grounding device
Motor heater control
Cabinet heater
Motor fan control
Motor brake control
24 V DC power supply
Service socket
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D -QA3, Mains contactor coil
E I/O and Relay Option
F Short-circuit protected supply
10.3.6 Pre-charging Control Wiring Diagram, AE10, AE11, IE10,
Plus code Description
+GACO Mains contactor
+GAMS Main switch
+GACB Air circuit breaker fixed
+GCEP Provision for grounding device
+IAMH Motor heater control
+IBCH Cabinet heater
+ICFC Motor fan control
+ICF1 Motor fan ctrl/supply 2.5–4 A
+ICF2 Motor fan ctrl/supply 4–6.3 A
+ICF3 Motor fan ctrl/supply 6.3–10 A
+ICF4 Motor fan ctrl/supply 10–16 A
+IDBC Motor brake control
+IFCS 24 V DC power supply
+IGS0 230 V AC socket CEE 7/3
Specifications
AQ330347384398en-000201 / 139Z8096 | 93
IE11.