Magnetek Flex 12RS System Informações Técnicas descarregar pdf (Página 48)

Flex M Engineered Receiver Instruction Manual

October 2014

Page 48 of 49

Problems Possible Reasons Suggestions

Drive Connected

to Serial

Communication

Card does not

respond

LED #6 is lit up, module is

wired in test mode (drive

connection is being

simulated).

Ensure wiring of the drive(s) to the Serial

communication card is correct.

The MLC

(Master) Relay

turns off during

normal operation

The transmitter powered

TEST due to inactivity.

Extend the inactivity timeout setting for the

transmitter.

The transmitter powered

TEST due to low batteries.

Replace the transmitter's batteries.

The RF/Message LED stops

blinking for more than 3

seconds, followed by the

MLC Relay turning off.

Radio interference; change the system's

channel setting.

The RF/Message LED

stopped and the MLC Relay

turned off together within 1

sec, possibly when engaging

or disengaging another relay

that is driving a contactor.

CPU module is resetting. Install snubbers

across the coils of all contactors to reduce

transient voltages. Ensure that the power

module has a stable power source.

The MLC has turned off and

the watchdog LED is blinking

the amber LED 6 times.

Ensure that the transmitter is properly

communicating with the receiver and that

the START has been activated on the

transmitter.

The serial data timeout error

LED (LED #5) on the serial

communication card is lit.

Drive serial communication

is inactive or was inactive for

more than 1 sec. MLC

Relay turned off together

when LED is lit.

Error is reset when transmitter issues a start

command. Inspect serial communication

wiring to ensure there are no breaks, poor

connections or damage to the wiring.

Digital Input

Module not

detecting an

input

Input voltage is greater than

36V and internal selector is

set to LOW band.

Verify input jumper is set to HIGH band for

voltages over 36V

Relay contacts

opposite from

what is expected

Contact state is selectable

for relays K1 and K2,

allowing active state to have

contacts either open or

closed.

Ensure jumpers for relays K1 and K2 are

installed in the desired positions.

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