AKD Installation | 9 Electrical Installation
9.9.4.3 Example installation with KCM-P and KCM-E
Maximum cable length between AKD and KCM: 500mm. The DC+ and DC- lines should
always be twisted, maximum cross section is 6mm². Ensure that the polarity is correct,
swapping round DC+/DC- will damage the KCM modules.
The KCM-P starts the charging process at approx. 470 V DC. If the power supply fails, the
module provides the DC bus link with the stored energy (this only applies to the power supply
voltage; battery-back the 24 V supply separately).
Setup KCM-P and KCM-E
Prerequisite for the following instructions:
Properly disconnected, grounded system.
KCM-P: assembled and wired in the switching cabinet. Set AKD undervoltage limit
VBUS.UVTHRESH to a value significantly below 470V DC, otherwise AKD will switch-
off before KCM-P provides energy to the DC bus link.
KCM-E: assembled and connected to the KCM-P with connection cable (X1) and PE line.
Discharge aids (plug-in bridge) are removed.
Proceed as instructed below:
1. Switch on the line voltage after the drive has finished the 24V boot process.
2. The KCM-P begins the charging process at approximately 470 V DC; the LED flashes.
RS422 interface X4 allows data exchange controlled by a terminal software of your choice.
Interface setting: 115200 Baud, 8 Data Bits, 1 Stop Bit, No Parity&Flow Control.
The X4 mating connector is in the package.
The ready signal reports the ready to operate (high level).
More information is given in the KCM Instructions Manual.
114 Kollmorgen | kdn.kollmorgen.com | October 2017
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