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4-12 Receiving & Installation MN792
Electrical Installation Continued
Figure 4-16 M Contactor Operation Sequence
Turn-ON
Run Time
Turn-OFF
M Contact
Enable
20 msec.
Motor Flux
“Drive ON”
Output
Mech. Brake Release
(If user installed)
Speed/Torque
Command
50 msec.
Brake Set Time
Blower Motor Starter Optional Size 1 and 2 controls only.
Size 1 and 2 controls can be equipped with an optional blower motor starter that uses a manual motor circuit
controller to provide motor overload and branch circuit protection for a single or three phase AC blower motor.
The starter assembly is fully wired and ready for site installation. This option offers
S Branch circuit protection
S Instantaneous magnetic short circuit protection
S Thermal overload protection, Class 10, with adjustable trip current settings
S Start/Stop/Reset switching with “tripped“ pushbutton indication
S Normally open auxiliary contact wired into the drive logic to indicate “Motor Overtemperature“ trip
Installation
1. Open the cover to view the fuse board (Figure 4-3).
2. Position the starter assembly horizontally across the top of the drive so that the harness points
downward toward the power terminals.
3. Align the bracket with its mounting slots on the inside walls of the drive. Snap into place with a firm
push until the tabs engage.
4. Locate the 14 pin header for the blower motor starter connections.
For size 1, this connector is CONN 2, located at the top left corner of the fuse board.
For size 2, this connector is CONN 44 located at the right edge of the terminal board.
5. This connector has a jumper installed at the right most two pins. Remove and save this jumper.
6. Plug the 14 pin connector from the blower motor starter onto this connector.
7. Use a small screwdriver to set the full load current of the blower motor on the dial of the blower motor
starter.
8. Connect the blower motor leads to terminals BL1, BL2, BL3 (Figure 4-7).
9. Press the Start button on the blower motor starter. Installation is now complete.