Norgren NFPA Aluminum & Steel Cylinders - 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" 2" thru 8" 2" thru 8" 2" thru 8"
Reed Switch Reed Switch Solid State & Light, Solid State & Light,
*MOV & Light *MOV & Light, 3 Wire Sourcing PNP Sinking NPN
Normally Open Normally Open Normally Open Normally Open
5-240 VDC/VAC 24-240 VAC 6-24 VDC 6-24 VDC
50/60 Hz 50/60 Hz
1 Amp Max 4 Amp Max 1 Amp Max 1 Amp Max
50 Amp Inrush
30 Watts Max 100 Watts Max 24 Watts Max 24 Watts Max
3 Volts N/A .5 Volts .5 Volts
85 Gauss 85 Gauss 85 Gauss 85 Gauss
Parallel Parallel Parallel Parallel
NEMA 6 & CSA Approved NEMA 6 & CSA Approved NEMA 6 & CSA Approved NEMA 6 & CSA Approved
-22°F to +176°F -22°F to +176°F -22°F to +176°F -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.
AC
Supply
Supply
AC/DC
Supply
AC/DC
Supply
6-24 VDC
–
– –
+
+ +
Load Load
Load
Load
RED
RED BLK
BLK
BLK
BLK
WHT
WHT
WHT
RED
RED
CS7 Series
1.27"
1.40"
.327"
.85"
Hook Up
Cable
Indicator Light
.68"
.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
N S
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 Sensor
Supply Supply
Output Output
V<>0 V=0
N
–
+
–
+
S