Heater Break Alarm; Hba Operating Conditions - 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
HBOP
* when ALD1=9 & INP2=4，original AL1 become HBAC display

HBA operating conditions

1. Heater current is less than the setting of HBAC
2. OUT1 output exceeds HBOP setting value
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 display area)
1. The heater current display value HBAC = 0.0(upper display area), when a heater disconnection occurs
 The heater current is less than the set value of HBAC=1.0. At this time ,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 time ,condition 2 is
3. Satisfied, alarm_1 will be activated when both 1 & 2 conditions are met and continue for more than 20 seconds.
Parameter setting
Level Parameter
1 HBAC
Fast HBOP
4 INP2
3 ALD1
3 ANL2
3 ANH2
FY operation manual
PV
SV
OUT1 OUT2 AT AL1 AL2 AL3
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)
Output percentage of trigger HBA
Set value
1.0
90.0
4
9
Current low-point calibration value
-12
(each controller calibrate value is different)
Current High-point calibration value
0x4527
(each controller calibrate value is different)
Sensor input
MAN PRO
%
80 100
FY900
CT
SC 80-T
Heater
Range
MAX MIN
100.0 0.0
100.0 0.0
Description
HBA action current (Unit: A)
When the output exceeds 90.0%
CT current input
HBA Alarm
Electric furnace
Default Level
1.0 Level 1
90.0 Fast
Hide/
Display
INP2=4
&
ALD1=9
INP2=4
&
ALD1=9
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