5. COMMUNICATION IDENTIFIERS
IMSRM04-E8
44
TIO module
CT module
CT6
CT5
CH6
CT2
CH8
CT4
CH7
CT3
CH5
CT1
CH7
CH5
CH8
CH6
CH4
CH3
CH2
CH1
CT
CT
CT
CT
TIO-D
TIO-B
CT input measured value 2
(Identifier: M4),
Heater break alarm set value 2
(Identifier: A4)
CT input measured value 1
(Identifier: M3),
Heater break alarm set value 1
(Identifier: A3)
For the details of the form to allocate each CT input of the CT module to the TIO module channels,
see the separate
Hardware Instruction Manual
(
IMSRM02-E
). Further, for the allocation
method, see the Supplementary Information for
Initialize Settings (Extended Communications)
.
Heater break alarm
This function determination whether or not there is a break in the heater by comparing the value of
the current flowing through the heater with the previously set current value that is considered to be
abnormal.
The heater break alarm function in this instrument can not be used with continuous analog
output.
[Setting example]
A numerical value of approx. 85% of the CT input measured value (Identifiers: M3 or M4) should
be set as the heater break alarm set value (Identifiers: A3 or A4).
However, for a heater with the characteristic of a slight delay in the rise of the current, change the set
value such as to reduce if necessary.
When sending and receiving data, note that identifiers M3 and A3 will be the channel numbers
of the TIO module and that M4 and A4 will be the channel numbers of the CT module.
TIO
CT
Heater
Sensor
CT
CT input
Operation unit
Control
output
Heater break detection:
When the CT input measured value (heater current)
read from the CT is less than the currently set heater
break alarm set value even if a control signal is
output, a heater break alarm is output.
Welding detection:
When the CT input measured value (heater current)
read from the CT is more than the currently set
heater break alarm set value even if a control signal
is not output, a heater break alarm is output.
