Azbil C35 Series

5-61
Chapter 5. DETAILED DESCRIPTION OF EACH FUNCTION
*1 If the setting is made so that the main setting is greater than the sub setting, the operation is performed with the main
setting swapped for the sub setting automatically.
*2 When the event type is CT1/2 heater burnout/over-current or CT1/2 heater short-circuit, the status becomes that the
event judgment cannot be made from the time of power ON until that CT input current value is measured for the first
time. In this case, the internal event output is OFF for both of direct action and reverse action in the direct/reverse
setting. To avoid that the output becomes OFF at power ON when used in reverse action, set as follows:
(Setting example)
For direct/reverse setting of CT1/2 heater burnout/over-current or CT1/2 short-circuit event, select the direct action, and
set the reverse operation in DO assignment calculation of the event output terminal (event terminal or control output
terminal).
CT event(direct action)
[Reverse] (DO output)
Normally open(0)
Normally open(0)
Normally open(0)
Operation type Set value of
operation
type
Direct action Reverse action
Loop diagnosis 1 20 The event is turned ON when any change in PV corresponding to increase/decrease in
Manipulated variable (MV) is not observed.
This event is used to detect any fault at the operation end.

Setting items
• Main setting: Manipulated variable (MV)
• Sub-setting: PV
• ON delay time: Diagnosis time

Operation specifications
The event is turned ON when the value does not reach the PV set in the sub-setting
within the diagnosis time (ON delay time) (conditions 1) even though the MV
exceeding the main setting is held (conditions 2).

CAUTION
When setting the ON delay, it is necessary to put in "High function configuration".
The default setting of the ON delay before shipment is 0.0s.
Sub-setting
Main setting
Time
Conditions 3
ON delay
set time
ON delay is started when conditions 1 and 2 are satised.
Area satisfying
conditions 1
Area satisfying
conditions 2
Time
Time
PV
MV
EV
ON
HYS
Heat control
Sub-setting
Main setting
Time
Conditions 3
ON delay
set time
ON delay is started when conditions 1 and 2 are satised.
Area satisfying conditions 1
Area satisfying
conditions 2
Time
Time
PV
MV
EV
ON
HYS
Cool control