Instruction manual

6. REMOTE INPUT/OUTPUT AND REMOTE REGISTERS
IMSRM52-E5
49
Continued from the previous page.
Exten-
sion
No.
Name
Attri-
bute
Data range Description
Factory set
value
45
Cannot be used.
− − − −
46
Cannot be used.
− − − −
47
Cannot be used.
− − − −
48
Control loop break alarm
(LBA) status
RO 0: Alarm off
1: Alarm on
Displays the output status of
the control loop break alarm
(LBA).
−
49
Loop break alarm (LBA)
use selection
R/W 0: Unused
1: Used
Sets use/unuse of the control
loop break alarm (LBA).
0
50
LBA time setting R/W 1 to 7200 seconds Sets the loop break alarm
(LBA) time.
480
51
LBA Deadband R/W Input span Sets the region in which no
loop break alarm (LBA) is
issued
0
52
Cannot be used.
− − − −
53
Cannot be used.
− − − −
54
Cannot be used.
− − − −
55
Cannot be used.
− − − −
56
Cannot be used.
− − − −
57
Cannot be used.
− − − −
58
Cannot be used.
− − − −
59
Cannot be used.
− − − −
60
Cannot be used.
− − − −
61
Cannot be used.
− − − −
62
Cannot be used.
− − − −
63
Cannot be used.
− − − −
z Heater break alarm function
The current transformer (CT) input measured value [Extension No.2] and heater break alarm set value
[Extension No.24] are used by the heater break alarm function. The heater break alarm set value is set
to about 85 % of the current transformer (CT) input measured value. However, for a heater having a
slightly delayed current rise characteristic, change the set value by lowering the set value if necessary.
Heater break alarm function:
The presence or absence of heater break is determined by comparing the current flowing through the
heater (current transformer input measured value: Extension No. 2) to the current preset and assumed
to be abnormal (heater break alarm set value: Extension No. 24). The presence or absence of heater
break can be recognized by the ON/OFF condition of the heater break alarm (remote input).
Continued on the next page.