DAZIC — EXPLOSION-PROOF ZERO SPEED SWITCHES

Technical Specification | DAZIC® — EXPLOSION-PROOF ZERO SPEED SWITCHES

Operating Range: 2100 EP Series — 4 to 2000 RPM, 8100 EP Series — 0.5 to 25 RPM

DAZIC® 2100 EP and 8100 EP Series Explosion Proof electromechanical rotary motion control zero speed switches monitor the rotary motion of equipment when interlocked as part of a conveyor system, or other shaft-driven process components.in hazardous locations.* The switches ensure that if one machine deviates or fails, the switch will:

• Break a circuit to a motor
• Actuate a signal or alarm device
• Signal a control station or PLC
• Make or break a circuit to other electrical devices
• Make a circuit to start auxiliary equipment

When driven from a critical shaft, a Zero Speed Switch will engage when a system’s normal operating speed:

• Reverses rotation
• Begins to overspeed
• Slows down due to overload
• Stops due to mechanical failure
• Changes due to normal machine cycling

Explosion-Proof Zero Speed Switches

2100 EP Series — Explosion Proof Zero Speed Switches

Operating Speeds from 4 to 2000 RPM

Speed Switch Input (RPM) (Application Running Speed)		Approximate Contact Operating Speeds (RPM)			Contact Type
MIN. RPM	MAX. RPM	Start-Up Trip-Point Upon Initial Speed Switch Acceleration (RPM)	Drop-Out Point On Shaft Speed Loss (RPM)		SPDT Single Pole, Double Throw	DPDT Double Pole, Double Throw	SPDT(2) Direction Indicating
			SLOW LOSS	RAPID LOSS	MODEL NO.	MODEL NO.	MODEL NO.
NOT FIELD ADJUSTABLE
24	2000	14 to 10	10	0	2120	2122	2130
15	200	8 to 11	Approx. 2 Sec. After Shaft Rotation Failure		2120-1	2122-1	2130-1
8	100	5 to 7	Approx. 3 Sec. After Shaft Rotation Failure		2120-5	2122-5	2130-5
4	50	2 to 3	Approx. 5 Sec. After Shaft Rotation Failure		2120-10	2122-10	2130-10
FIELD ADJUSTABLE
30	2000	25 to 70	30-40% Below Trip Point	0	2120-A1	2122-A1	2130-A1
75	2000	60 to 140	30-40% Below Trip Point	0	2120-A2	2122-A2	2130-A2
150	2000	125 to 450	30-40% Below Trip Point	0	2120-A3	2122-A3	2130-A3
240	2000	200 to 600	30-40% Below Trip Point	0	2120-A4	2122-A4	2130-A4
15	200	10 to 45	30-40% Below Trip Point	0	2120-A11	2122-A11	2130-A11
7	100	5 to 15	30-40% Below Trip Point	0	2120-A15	2122-A15	2130-A15

8100 EP Series — Explosion Proof Zero Speed Switches

Operating Speeds from 0.5 to 25 RPM

Speed Switch Input (RPM) (Application Running Speed)		Approximate Contact Operating Speeds (RPM)			Contact Type
MIN. RPM	MAX. RPM	Start-Up Trip-Point Upon Initial Speed Switch Acceleration (RPM)	Drop-Out Point On Shaft Speed Loss (RPM)		SPDT Single Pole, Double Throw	DPDT Double Pole, Double Throw	SPDT(2) Direction Indicating
			SLOW LOSS	RAPID LOSS	MODEL NO.	MODEL NO.	MODEL NO.
1.5	5	1.5	0.5	0	8121	81212	8131
0.5	25	0.5	Approx. 4 Sec. After Shaft Rotation Failure		8121-5	81212-5	8131-5
2	25	1.5	Approx. 3-5 Sec. After Shaft Rotation Failure		8122-5	81222-5	8132-5

Not Field Adjustable

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