Motortronics
Page 12
2 Operation
2.1 Sequence of Operation
The ABC Series brake becomes "Armed" when the motor starter turns "On” and then braking occurs when the
starter is turned "Off". An Operator Interface Module has two large LEDs to indicate "Braking" or "Fault"
condition, plus six smaller LEDs to indicate the following modes of operation:
2.1.1
“Power On”
The ABC Series brake is self-powered from the available motor branch circuit as derived from Terminals L1 and
L2. If fuses are used, this LED will indicate a blown fuse condition in either of these circuits by being off when
power is applied to the starter (see section 4.2.1). This LED does
NOT
indicate motor starter or ABC Series
brake unit operational status.
2.1.2
Jog / Armed
The ABC Series receives a Brake Command from an input wired to the motor starter which indicates the starter
status (see section 4.3.1). The ABC Series can be programmed to wait a period of time before going into the
"Armed" condition using the "Jog" feature. This feature allows for user setup and testing of systems during the jog
time with- out the braking cycle interfering. (The "Jog" time is set via the "Jog Time" dip switches.) This LED will
flash once per second until the end of the jog time. If the Motor Starter is turned off again while the ABC Series
is still in the "Jog" mode, the brake will
NOT
arm and DC injection will not take place (setting this time to zero
will turn off this feature). After the "Jog Time" expires, the ABC Series will enter the "Armed" mode (indicated
when the JOG/ARMED LED illuminates in a steady state). The ABC Series is now ready to begin DC injection
braking the next time the motor starter is turned off. The "Armed" mode has no time limit and will be
maintained for the duration of the motor run time.
Phone: 800.894.0412 - Fax: 888.723.4773 - Web: www.clrwtr.com - Email: [email protected]
