Omron ZEN Operation Manual page 153

Application Examples
Parameter Settings
Calendar Timer Setting *0
Start Nov 15 and stop Mar 20
Offset startup time setting
T0
Set to 30 seconds.
Greenhouse Air Circulation Control (3/3) (Analog
Comparator)
Application
The ZEN can be used to start the circulation fans once the temperature has reached a
set level. A low startup current would result from a difference in the fan startup times.
System Configuration
DC power
R S T
supply
+ −
+ –
NC
MC1 MC2
MC1 (Q0)
IM IM
Circulation fan Circulation fan
130
Weekly timer setting @0
Start at 19:00 and stop at 6:00
Operation time setting T1
Set to 1 hour. Set to 1 hour.
Temperature
I4
sensor (0 to 10 V)
SW1 (I0)Operate
ON
SW2 (I1) Stop
OFF
ZEN-
10C@DR-D
Temperature
Set
temperature
Circulation
MC2 (Q1)
Circulation
Stop time setting T2
Set to 30 minutes.
The temperature is detected by a 0- to 10-V
temperature sensor. The circulation fans
will start operation when the analog input
voltage exceeds 5.2 V.
T0
Appendix D
Time
T0