GE LM10 Motor Start/Stop Logic, Motor RUN Commands, Motor STOP Commands, Aux.Sense 1 Time, Delay

CHAPTER 4: FUNCTIONALITY MOTOR START/STOP LOGIC

AUX. Sense 1 fault detects a welded contactor when the contactor fails to open within 0.4 seconds after the RUN1 O/P signal goes off.

Motor RUN Commands

RUN1 Switch Input				Relay O/P
RUN1 PDU Command						MOTOR STATUS
		S
	OR		Latch		RUN1 O/P		RUNNING#1

Autorestart

R

DeviceNet

RUN1 command*

Motor STOP Commands

STOP Switch Input

STOP PDU Command

DeviceNet

Stop command*

Relay Trip OR

RUN2 Start Command

MODE change from
USER to CONFIG
De-assert RUN1
Switch Input **
Setting:		Open Contactor Logic
Aux.Sense 1 Time
Delay
Tpkp=0.1 to 25s ec
		AND
Aux.Sense1 Switch Input
			MOTOR STATUS:
			AUX.SENSE 1 FAULT
	Welded Contacts Logic		OR
Aux.Sense 1 Time
Delay
Treset= 0.4 sec		AND

Note:

*Devicenet Commands can be issued only if the Devicenet control switch input is asserted

**The Maintained switch setting should be set to ON

FIGURE 4–5: Motor RUN1 Start/Stop Logic

LM10 MOTOR PROTECTION SYSTEM – INSTRUCTION MANUAL 4–43