Do-more H2 Series PLC Hardware User Manual, 1st Edition, Rev. F - H2-DM-M
5–18
Chapter 5: Specifications - Discrete I/O Modules
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A
B
C
D
F2–16TD1P, DC Output With Fault Protection, continued
When this module is installed, 16 X bits
are automatically assigned as fault status
indicators. Each X bit indicates the fault
status of a particular output.
D2-08ND3
F2-16TD1P
X0 - X7
X8 - X23 Y0
- Y15
Fault Status
Operation
Missing external 24VDC
Apply external 24VDC
Open load
Connect the load.
Over temperature
Turn the output (Y bit) off or
power cycle the PLC
Over load current
H2-DM1 or H2-DM1E
The fault status indicators (X bits) will
automatically reset once the fault condition is
corrected. Over temperature and over load can be
reset by turning the assigned output off or power
cycling the PLC.
Example
In this example, X8-X23 are assigned as fault
status indicators.
X8: Fault status indicator for Y0
X9: Fault status indicator for Y1
X22: Fault status indicator for Y14
X23: Fault status indicator for Y15
This module detects the following fault statuses and
turns the related X bit(s) on.
1. Missing external 24VDC for the module
2. Open load
3. Over temperature (the output is shut down)
4. Over load current (the output is shut down)
Enable Load
Detection
J6=Enable
Loa
d
Detection
J6=Enable
Loa
d
Detection
J6
J6
Fault Status
X bit Fault Status Indication
Missing external 24VDC
All 16 X bits are on.
Open load
Only the X bit assigned to the
faulted output is on
Over temperature
Over load current
NOTE:
Open load detection can be disabled by removing the
jumper switch J6 on the module PC board. Disable if the load
might be energized by 200µA, or load resistance is > 56k
Ω
.
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