Pixsys ATR 401 - Heater Break Alarm by Current Transformer (T.A. Input)

ATR401 - User manual 25
Parameter  has the same meaning of cycle time for heating action  
Parameter  (Cooling Fluid) pre-selects the proportional band multiplier
     and the cooling P.I.D. cycle time  according to cooling  uid type:

Cooling  uid type
     
 
Air 1.00 10
 
Oil 1.25 4

Water 2.50 2
Once parameter
, has been selected, the parameters    , 
and  can be however modi ed.
9.2 Heater Break Alarm by current transformer (T.A. input)
This function allows to measure load current and to manage an alarm in case
of malfunctioning (with power in short circuit or always o ).
The current transformer connected to terminals 15 and 16 must be 50 mA
(sampling time 100 ms).
• Set end scale value of the current transformer in Amperes on par. 73 
• Set the intervention threshold of the Heater Break Alarm in Amperes on
par. 74 
• Set the intervention delay time of the Heater Break Alarm on par. 75 
• It is possible to associate the alarm with a relay by setting the parameter 

,  ,  or  as 
If a remote control switch or SSR remains closed, controller signals the fault by
showing  on display 2 (alternatively with a command setpoint).
If the power stage remains open, or the load current is lower than the value
set on  , controller shows  on display. It is possible to display the
current absorbed during the closure phase of the power stage.
Press Display Do
1
FNC
This key enables to scroll
on display 2 the output
percentage, auto / man
selection, setpoint and alarms.
Press
FNC
until the writing
 appears on display
1 and display 2 shows the
current in amperes (  >0).
The value is also maintained
when no current circulates on
the load.
Setting on parameter 74
 the value 0 it is possible to visualize the
current absorbed without generating the Heater Break Alarm.