User Manual
CE2N5243en
2017-11-21
Building Technologies
5
243
Digital Time Switch
SEH62.1
Digital time switch used to switch plant on and off, or for the control
of setback periods at night or at weekends.
∂ Integrated countdown timer
∂ Suitable for mounting on DIN rail
∂ Simple programming with large and easy - to-understand LCD
∂ Manual on/off control
∂ Quick Daylight Saving (DS) adjustment
∂ Backup of 72 hours
Functions
The microprocessor automatically stores the programmed times in chronological order.
The time switch operates in one of 4 modes:
∂ Manual continuously on
∂ Manual continuously off
∂ Adjustable count down timer on, or
∂ Automatic operation via the time program
A switch with momentary contact closure across M-D1 activates the countdown timer.
The power supply is buffered by a memory backup capacitor. In the event of a power
failure, the time switch will continue to run, with the program retained, for 72 hours.
However, the relay will assume (or remain in) the normal position.