Omron D4BL manual Connection Example with OMRON’s G9SA Safety Relay Unit

■Connection Example with OMRON’s G9SA Safety Relay Unit

G9SA-321-T@(24 VAC/VDC) + D4BL-@A-@, @B-@(Mechanical Lock Type) Circuit Diagram (Manual Reset)

Lock release signal

Note: This example circuit is for Category 3.

		KM1
Switches	SafetyDoor	KM2
		S2
		S4
		31
		32
	D4BL	11
		12
		Guard
		S1
		OPEN
		Stop signal

S1:	Safety Limit Switch
	with direct opening mechanism
	(D4B-N, D4N, D4F)
S2:	Guard Lock Safety-door Switch
S3:	Reset switch
S4:	Lock release switch

KM1 and KM2: Magnetic Contactor

M:3-phase motor

Feedback loop

KM1

S3 KM2

A1	A2	T11		T12
								1
TH		a		K1	K2		K3
SA
			K1	b			K4	Off-Delay
					K2			Timer
				6
		PE	T21		T23	T22

T31	T32		13	23	33	43	53	61
			3
	K3		4
									1
a	K4								2
									3
									4
Control		2 K1						JP	5
Circuit		5							6
b		K2
A	B		14	24 34 44			54 62

KM1 KM2

Timing Chart

Limit switch S1

Guard Lock Safety-door Switch S2

Lock release signal

Lock release switch S4

Stop signal

Reset switch S3

K1 and K2 (NC)

K1 and K2 (NO)

K3 and K4 (NC)

K3 and K4 (NO)

KM1 and KM2 (NC)

KM1 and KM2 (NO)

Operation instruction

Motor rotation

Guard opens

Operation

instruction

Motor controller

KM1

Guard can be opened

KM2

M

OFF-delay time

A-72Guard Lock Safety-door Switch D4BL