GE MOTOR MANAGER 2 User Manual

9-6 MM2 Motor Manager 2
GE Power Management
9.3 TWO SPEED STARTER 9 STARTER TYPES
9
9.3 TWO SPEED STARTER 9.3.1 DESCRIPTION
When the low speed button is pressed, the CR coil will pick up and seal itself in. The L contactor is
then picked up and the motor starts in low speed. When the high speed button is pressed, the L con-
tactor drops out and the H contactor picks up and seals itself in. Timing relay TR is also picked up. If
the low speed button is pressed, the TR relay will prevent the motor from going to low speed until it
times out and the motor has had time to slow down.
Figure 9–5: ELEMENTARY TWO SPEED MAGNETIC STARTER
To program the MM2 for two-speed starter, set:
S1 CONFIGURATION\STARTER\STARTER TYPE: TWO-SPEED
S1 CONFIGURATION\STARTER\TRANSFER TIME: 1 to 125 sec.
S1 CONFIGURATION\STARTER\HIGH SPEED START BLOCK: ENABLE or DISABLE
The TRANSFER TIME setpoint appears when the STARTER TYPE has been selected as TWO-SPEED. This
delay may be required when the motor is switched from high-speed (Contactor B) directly to low-
speed (Contactor A). The delay starts when Contactor B drops out.
The HIGH SPEED START BLOCK setpoint appears when the STARTER TYPE has been selected as TWO-
SPEED. When set to DISABLED, the MM2 allows the motor to be started directly to high speed. When
set to ENABLED, the motor must be started in low-speed before switching to high-speed.

GE MOTOR MANAGER 2 Specifications

General

Brand	GE
Model	MOTOR MANAGER 2
Category	Controller
Language	English