Edwards Signaling 291-F7 - Manual (Page 3)

Testing
After mounting the switch and actuator, test the switch for proper operation. Test with
circuit disconnected from source and load. For multiple switches in series, test one
switch at a time with all other guard doors closed. Then:
1. Hook the black and white leads of the switch to an Ohmmeter. Move the gate or door
open and closed several times slowly. At all times the meter should read O.L.
or “open.”
2. Hook the Ohmmeter to the black and red leads of the switch. Move the door or gate
open and closed. The meters should read O.L. when the actuator is away and it
should read less than 1 Ohm when the actuator is in range.
3. Hook the Ohmmeter to the white and red leads of the switch. Move the door or gate
open and closed. The meter should read 11–14 ohms (F6 model) and 500-100 ohms
(F7 models) when the actuator is away and it should read O.L. when the actuator
is in range.
Wiring
1. After the switch and actuator have been mounted and tested, wire the FailSafe
GuardSwitch ™ as shown in Figure 3.
2. For wiring 2 to 10 FailSafe GuardSwitches ™ in series, see Figure 4. (Do not exceed
10 switches in a series).
3. Failure to install in-line fuse voids warranty.
Troubleshooting
If the in-line fuse blows or the GuardSwitch ™ remains open:
1. Check the application for premature failure caused by inrush-currents, tampering,
excessive vibration and misalignment.
2. Disconnect all three wires of GuardSwitch ™ and test according to testing
instructions, steps 1-3.
3. If the GuardSwitch ™ fails any of the three tests, it must be replaced.
4. Replace the in-line fuse if blown.
General Specifications
Enclosure Seamless 304 Stainless Steel
Temperature Range -40 ° F to 150 ° F (-40 ° C to 65 ° C)
Environmental Hermetically Sealed Contact Switch
Encapsulated in Polyurethane
NEMA Rating 1, 2, 3, 4, 4X, 5, 6, 12
Protection Class IP 67
Response Time 5 msec
Life Cycles 100,000 Under Full Load;
Up to 200,000,000 Under Dry Circuit
Lead Types/O.D. SJTOW-A (K) 18/3 AWG/0.33" (0.83cm)
UL/CSA All Models
Note: The 291-F7 has a patented “watch-dog” circuit which, when switch failure
occurs, the fused watch-dog circuit will draw 4 Amps. The voltage supply must
have a current capacity of 4 Amps. This results in an open, fail-safe condition.
GE Security Industrial GuardSwitch TM Series 200 www.ge-security.com/industrial
File E 115761 LR89176