ENSIM SENSORS ELP Operating Manual page 9

2.5. Reed Relay and Protection Circuit
Glass Tube Contact
Inert Gas Magnetic Reed
2.6. Electrical Installation
Make the electrical connection of the instrument according to details on its label, table and cable figures in this manual.
With Cable
Blue 1
Black 2
Single Contact NO
Single Contact NO
Inductive Load
When reed switch is used for loads such as electromagnetic relay ,contactor or solenoid, reed switch may be exposed to very high
voltage depending on value of inductive load. This causes either failure of switch or shortening its service life. Therefore, it is
recommended to be used as follows depending on used voltage, for the purpose of protection of switch.
Inductive Load
Capacitive Load
When reed switch is used with capacitive load, it may cause that high current passes over reed switch, depending on value of
capacity during Charge –'96 Discharge of capacity. So this may cause failure of switch. It is recommended to be used as follows
depending on used voltage, for the purpose of protection of switch.
Wire
With Clemens
Normaly Closed Blue 1
Reed Switch 1
Reed Switch 2
Common Black 3
Normaly Open Brown 2
1 2
Single Contact NO/NC
Neon Lamp
SPST-NO
Single Pole-Single Throw
Normally Open
SPST-NC
Single Pole-Single Throw
Normally Closed
SPDT-NO/NC
Single Pole-Double Throw
Open / Closed Contact
Inductive Load
9
With Socket
Reed Switch 1
Reed Switch 2
Single Contact NO
Inductive Load