Units with a built-in Regen option contain terminals 82
DC(+) and 83 DC(-). Within the drive, the Regen terminals
connect to the DC bus on the output side of the DC-link
reactor.
Use Regen terminals to connect a single drive to an
external Regen module. Do not use the Regen terminals to
connect together the DC bus circuits of multiple drives.
NOTICE
Regen is applicable to parallel drive systems; load
sharing is not. Individual modules have Regen terminals,
which are used to parallel the drives to achieve high
power. To connect to an external Regen unit, use a DC
fuse suited for Regen.
5.3.8 Specic Power Card Connections
Connector MK106 terminals 104, 105, and 106 on the
power card allow for the connection of an external
temperature switch. The input can be used to monitor the
temperature of an external brake resistor. Two input
congurations are possible: If the input state changes, the
drive trips issuing alarm 27, Brake Chopper Fault. If no such
input is used, or the normally open conguration is
selected, a jumper must be installed between terminals
104 and 106.
•
A normally closed switch connected between
terminals 104 and 106.
•
A normally open switch between terminals 104
and 105.
MK500 terminals 1, 2, and 3, and 4, 5, and 6, provide
access to 2 auxiliary relays. These relays create a form C
contact, meaning a normally open and a normally closed
contact on a single throw. The contacts are rated for a
maximum of 240 V AC, 2 A, and a minimum of 24 V DC, 10
mA, or 24 V AC, 100 mA. The relays can be programmed
via parameter 5-40 Function Relay to indicate drive status.
NOTICE
In parallel drive systems, the MK500 connector is found
on the control shelf. Terminals 104 and 106 are extended
to the top of each module through a wiring harness. The
terminals are on the top of each module near the DC
fuse.
Internal Drive Operation Service Guide
MG94A502 Danfoss A/S © 02/2019 All rights reserved. 59
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