38
Control Timer Function
Control timer starts if CH1 input exceeds Control timer start temperature, and after Control timer set
time has passed, the control (Output low limit value for DC current output) and Alarm action stop.
However, for the Direct control action, Control timer starts when CH1 input drops below the CH1 timer
start temperature.
CH1 PV/SV display indicates CH1 PV, and CH2 PV/SV display flashes timer remaining time.
To start control again after timer time is up, turn the power ON again or press the
Key for 1 sec.
If the Control timer time is set to 0 (zero), the timer will not work.
Even though CH1 input does not reach Control timer start temperature, the Control timer can start by
the DI input ON (Closed) or by pressing the
Key for 1 sec.
If the Control timer set value has been changed while the Control timer is working, the setting will
come into effect next time.
If the Control timer time has passed during AT, the AT will be forcibly stopped, and each parameter
returns to the previous value at which AT was performed.
Delay Timer Function
When Delay timer function 1 is selected
:
ON delay timer starts when DI input is ON (Closed), and timer remaining time will be indicated on
the CH2 PV/SV display.
Timer output turns on after ON delay timer time has passed.
After that, if DI input is turned OFF (Open), OFF delay timer starts, and timer remaining time will be
indicated on the CH2 PV/SV display.
Timer output turns off after OFF delay timer time has passed.
When Delay timer function 2 is selected
:
Control and Alarm action start/stop are interlocked with the timer output.
If Delay timer is restarted, Alarm action will return to its initial status (for the Alarm with standby, it
returns to standby status again).
Between DI terminals Open : OFF
Between DI terminals Closed: ON
Circuit current when closed : 12 mA
Delay timer function 1
ON DLY : ON delay timer setting
OFF DLY: OFF delay timer setting
Delay timer function 2
ON DLY : ON delay timer setting
OFF DLY : OFF delay timer setting
DI (digital input)
ON
OFF
ON DLY
OFF DLY
T.OUT (timer output)
ON
OFF
DI (digital input)
ON
OFF
ON DLY
OFF DLY
T.OUT (timer output)
ON
OFF
CH1 control output
START
STOP
CH1 Alarm action
START
STOP
(Fig. 8.4-3)
(Fig. 8.4-2)
