Norgren NFPA Aluminum & Steel Cylinders User Manual

Page 91

Brookville, OH USA

Phone 937-833-4033

www.norgren.com

ACT-1-91

Switches for 2" to 8" Series A & EA Cylinders

Switches for 2" to 12" Series J & EJ Cylinders

CS7-04 Reed

CS7-24 Reed

CS7-31 Solid State

CS7-32 Solid State

2" thru 8"

Reed Switch

Solid State & Light,

*MOV & Light

*MOV & Light, 3 Wire

Sourcing PNP

Sinking NPN

Normally Open

5-240 VDC/VAC

24-240 VAC

6-24 VDC

50/60 Hz

1 Amp Max

4 Amp Max

1 Amp Max

50 Amp Inrush

30 Watts Max

100 Watts Max

24 Watts Max

3 Volts

N/A

.5 Volts

85 Gauss

Parallel

NEMA 6 & CSA Approved

-22°F to +176°F

NOTE: For 8" bore add 9 to part number. Example: CS7-9-04. For 10" and 12" bore, consult the factory.

Supply

AC/DC

Supply

AC/DC

Supply

6-24 VDC

–

Load

RED

BLK

WHT

RED

CS7 Series

1.27"

1.40"

.327"

.85"

Hook Up
Cable

Indicator Light

.68"

1.66"

1.28"

.86"

Reed Switch Working Principle
Reed switch sensors contain hermetically sealed reed elements
(mechanical contacts) which are open in their normal state. When
a magnetic field moves within proximity of the switch, magnetism
is induced into the leads and forces the contacts to close.

In order to obtain optimum performance and long life, magnetically operated
limit switches should not be subjected to: (1) strong magnetic fields,
(2) extreme temperature, and (3) excessive ferrous filing or chip buildup.

Improper wiring may damage or destroy the switch. The wiring diagram, along
with the listed power ratings, must be carefully observed before connecting
power to the switch.

Lower power switches are designed for signaling electronic circuits. Do not use
on relay loads or with incandescent bulbs. Resistive loads only.

Normally Open Reed

Switch Open

Switch Closed

Normally Open Reed

Solid State/Magnetoresistive Working Principle
The solid state (no moving parts) magnetoresistive sensor
responds to a parallel magnetic pole by providing a digital signal
to the output control circuit. This technique enables the sensing
of weak magnetic fields, with no limit to the maximum strength of
the magnetic field. Norgren solid state switches are similar to the
Hall effect switch.

Application Recommendations and Precautions

To provide maximum reliability.
1. Always stay within the specifications and power rating limitations of the

unit installed.

2. Primary and control circuit wiring should not be mixed in the same conduit.

Motors will produce high pulses that will be introduced into the control wiring
if the wiring is carried in the same conduit.

3. Never connect the switch without a load present. The switch will be

destroyed.

4. Some electrical loads may be capacitive. Capacitive loading may occur due to

distributed capacity in cable runs over 25 feet. Use switch Model CS7-24
whenever capacitive loading may occur.

Magnet

Sensor

Supply

Output

V<>0

V=0

–