Hello,
we need to control process with ATR243-31ABC:
Input: Pt100 - 3 wire
Output: SSR PID control
What we need: amperometric Transformer to control if heating element is ok or broken?
Do we receive loop break alarm if heating element is burned? (Do the controller understand him self, if he turned off his output and there is no current in loop.?? Does controller check the transformer just in that time, when the output is on???)
Thank You !
[ATR243-31ABC] SSR PID control and Amperometric Transformer
-
user497
- Posts: 36
- Joined: 09/02/2011, 14:33
- Location: Latvia
- Contact:
-
Pixsys tecnico 1
- Moderatore
- Posts: 1662
- Joined: 29/10/2010, 10:09
- Contact:
Re: Amperometric Transformer
You receive the alarm if the load is short-circuit or broken. The controller check the current loop continuously during the regulation.
I report exactly paragraph "7.11 Loop Break Alarm On Amperometric Transformer" :
This function allows to measure load current and to manage an alarm during
malfunctioning (with power in short circuit or always off ).
The amperometric transformer connected to terminals 15 and 16 must be 50
mA (sampling time 80 ms).
• Set scale end value of the amperometric transformer in Amperes on parameter
47 [t.a.]
• Set the intervention threshold of the Loop Break Alarm in Amperes on parameter
48 [L.b.a.t.]
• Set the intervention delay time of the Loop Break Alarm on parameter 49
[L.b.a.d.]
• You can associate the alarm with a relay by setting the parameter [AL. 1], [AL.
2] or [AL. 3] as [AL. 4.]
If a remote control switch or SSR remains closed, the controller signals the fault
by showing "L.b.a.c." on display 2 (alternatively with a command setpoint).
If instead the power stage remains open, or the load current is lower than the
value set on [L.b.a.t.,] the controller shows "L.b.a.o." on display.
I report exactly paragraph "7.11 Loop Break Alarm On Amperometric Transformer" :
This function allows to measure load current and to manage an alarm during
malfunctioning (with power in short circuit or always off ).
The amperometric transformer connected to terminals 15 and 16 must be 50
mA (sampling time 80 ms).
• Set scale end value of the amperometric transformer in Amperes on parameter
47 [t.a.]
• Set the intervention threshold of the Loop Break Alarm in Amperes on parameter
48 [L.b.a.t.]
• Set the intervention delay time of the Loop Break Alarm on parameter 49
[L.b.a.d.]
• You can associate the alarm with a relay by setting the parameter [AL. 1], [AL.
2] or [AL. 3] as [AL. 4.]
If a remote control switch or SSR remains closed, the controller signals the fault
by showing "L.b.a.c." on display 2 (alternatively with a command setpoint).
If instead the power stage remains open, or the load current is lower than the
value set on [L.b.a.t.,] the controller shows "L.b.a.o." on display.