Rockwell Automation WebPak 3000 DC Drives Hardware Reference, Installation and Troubleshooting - Manual (Page 27)

Install and Wire the Drive 2-15
2.5.5.3 COAST/STOP Digital Input
The WebPak 3000 drive can be configured to provide a coast-to-rest operational stop without
physical separation of the power source from the motor. A coast-to-rest stop turns off the
transistor power device drivers.
Opening of the digital input COAST/STOP (terminal 8) during operation causes blocking of the
regulator and the drive to Coast-to-rest. This input may be used for the Emergency Stop control
circuit, if the main contactor drop out is forced by electro mechanic device, otherwise this Stop
function corresponds with Category 2. NOTE: If this digital input is not used, a jumper must be
wired between drive terminals 7 and 8, otherwise the drive will not start.
2.5.5.4 SECTION OFF Digital Input
Opening the SECTION OFF input (terminal 3) with the drive running causes the drive to stop in
the selected Stop-Mode (‘Coast-to-rest’, ‘Ramp-to-rest’ or ‘Current limit Stop’). This STOP-
function corresponds with Category 2, if the main contactor drop out is not forced by electro-
mechanic device. The function is active at all times regardless of the selection of
AUTO/MANUAL or the CSS setting (KEYPAD/TERMBLK).
2.5.5.5 Customer Interlock Digital Input
Opening the control input at terminal 9 during operation is the fastest way to disable the drive
output. By software it directly ramps down armature current to zero and then opens the main
contactor. The motor will coast to rest. Because this is a software function it must not be used
for safety relevant stopping. For emergency stop use the COAST/STOP input.
NOTE: If this digital input is not used, a jumper must be wired between terminal 9 and 11,
otherwise the drive will not start.
2.5.6 Wire the Main Contactor to the Drive
(Refer to connection diagram example Figures 2-8a and 2-8b)
A main contactor in the AC-line input or armature circuit is not built-in and must be externally
provided. It allows ‘Coast-to-rest’ (Category 0) or ‘Ramp-to-rest’ (Category 1, according to
EN60204-1, Chap. 9.2.2.) each with disconnection of the power source from the motor.
The sequencing of the M-contactor must be controlled by the drive MCR contact of the WebPak
3000, which is wired to terminal strip X1:5 and X1:6 located at top of the power unit.
On drives, where the inrush current of the M-contactor coil exceeds the MCR contact rating
(330 VA at AC 230V, cos phi 0.5), a pilot relay is required between the MCR contact output and
the M-contactor coil. A normally open auxiliary contact from the main contactor must be wired to
terminals X1:3 and X1:4 to provide contactor status feedback to the drive.
X1
K10 K10T K1 K1M
5
6
3 4
MCR
K10
K1
K1M
K10T
Figure 2.8a – Main Contactor Sequencing Connection Diagram - Example