Emb Run Permissive - Danfoss VLT Option Panel Instruction Manual

EMB Run Permissive

General Information
Run permissive allows a remote signal to
notify the drive to start, indicating the system
is safe to operate. Run permissive works in
drive or bypass mode. Run permissive is
disabled by factory default when ordered by a
jumper wire on connector X58 between
terminals 1 and 2.
Prior to Enabling Run Permissive
• Complete the start-up procedure to
verify motor rotation direction in
bypass is correct and that the system
is ready in all respects for continuous
full speed operation in bypass.
• Verify that the drive is programmed for
the run permissive function. See the
drive support materials for program-
ming the run permissive function.
Operation
• A start command can be from local
hand start on the drive keypad or a
remote auto start signal through digital
input connector X55, terminals 3 and
4, or the serial communications input.
• In response to a start command, an
output request is sent from X58 termi-
nals 1 and 2 to the external equipment
(to activate a valve or damper, for
example).
• When a return run signal on X55
terminals 1 and 2 is received, the
motor is started in either drive or
bypass mode, depending upon the
bypass switch position.
Run Permissive Function Setup
• Remove factory-installed jumper wire
on connector X55, terminals 1 and 2.
• Wire the output run request to connec-
tor X58, terminals 1 and 2.
• Wire the input run permission to
connector X55, terminals 1 and 2 per
the system application.
Disable Run Permissive
• Run permissive is enabled by factory
default when ordered.
• To disable the run permissive function,
jumper between terminals 1 and 2 on
connector X55.
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