Heater Break Alarm - Taie FY400 Operation Manual

11.4 Heater Break Alarm

Description
The HBA (Heater-Break-Alarm) function measures the heater current and displays the measured current value on the
parameter HBAC upper area so that the heater status can be monitored at any time.
When it is detected that the heater is disconnected or the heater current is abnormally reduced, an alarm message may
be immediately output to notify the user.
Function Diagram
Parameter
Parameter Symbol
*HBAC
* when ALD1=9，original AL1 become HBAC display
HBA operating conditions
1. Heater current is less than the setting of HBAC
2. OUT1 output exceeds 90%
3. The conditions of 1 & 2 above are established and continue to exceed 20 seconds
Examples
Heating system with SSR as control element, set HBAC=1.0(down area)
1. The heater current display value HBAC = 0.0(upper area), when a heater disconnection occurs
 The heater current is less than the set value of HBAC=1.0. At this point, the operating condition 1 is satisfied.
2. The heater no longer heats when the heater disconnection occurs, and the gap between the PV and SV will become
larger and larger.
 The manipulated value of OUT1 is also getting larger and larger, and eventually exceeds 90%. At this point, action condition
2 is satisfied.
3. The AL1 alarm will be activated when both 1 & 2 conditions are met and continue for more than 20 seconds.
Parameter setting
Level Parameter
1 HBAC
4 INP2
3 ALD1
3 ANL2
3 ANH2
35
KBA(
PV
10.0
SV
OUT1 OUT2 ATAL1 AL2AL3
OUT1
HBA alarm
0 20 40 60
SET A/M
TAIE
Control output
+ -
SSR
AC power
Content
HBA current setting value
Upper : heater current display
Down : current setting value
unit : ampere(A)
Set value
1.0 HBA Action Current Set Value (Unit: A)
4
9
-12
(each controller calibrate value is different)
Current High-point calibration value
0x4527
(each controller calibrate value is different)
Sensor input
MANPRO
%
80100
FY900
CT
SC 80-T
Heater
nsor
Range
MAX MIN
100.0 0.0
Description
CT current input
HBA Alarm
Current low-point calibration value
se
Electric furnace
Default Level
1.0 Level 1
FY/FU operation manual
Hide/
Display
INP2=4
&
ALD1=9