Instruction manual

3. DESCRIPTION OF EACH MODULES
IMSRM15-E6
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3.7.3 Functional description
Heater break alarm output function
The H-CT module, combined with the CT sensor or H-TIO module, can output a heater break alarm.
(Refer to P. 123).
Up to six CT sensors can be connected to one H-CT module. The input
terminals of the H-CT module consist of three blocks with one common
terminal and two CT terminals per block.
In addition, respective H-TIO module channels can be freely assigned to these
current transformers. In addition, as the specifying channel number is assigned
in duplicate, 3-phase heater break can be detected by combining two or more
current detectors (CT).
For the heater capacity of 30 A or less, the H-CT-A-P module for 0 to 30 A (CT sensor:
CTL-6-P-N using type) should be used in view of the current detection sensitivity.
CT input cannot be assigned to the H-TIO module with voltage/current control output.
Each CT input can be assigned from the dedicated Operation Panel, or host computer via
communication.
The heater break alarm can be output as summary output (OR output) from the digital output
block in the H-PCP-A/B module. For details, refer to 3.3 H-PCP Module (P. 36).
The respective heater break alarm can be output independently for each channel by
connecting the H-DO-A/B/D module. For details, refer to 3.9 H-DO Module (P. 70).
For details on CT input selection, refer to SR Mini/SR Mini HG SYSTEM Supplementary
Information Initialize Settings [Extended Communications] (IMSRM07-E
).
5
6
7
8
3
1
2
4
9
COM
COM
COM
CT 1
CT 2
CT 3
CT 4
CT 5
CT 6