Transistor Output Selection Function - Mitsubishi Electric MELSEC FX Series User Manual

FX -4LC User's Manual
3U
6.3

Transistor Output Selection Function

The transistor output selection function selects either one among control output, alarm output and loop
breaking alarm output for transistor outputs built into the 4LC.
For example, when external outputs are used for control, transistor outputs built into the 4LC are not required,
and can be used as alarm outputs.
The transistor output selection function varies depending on the control mode setting as shown below.
Set the transistor output for each channel.
Transistor output selection
Transistor
output
0, 1 : PID control
selection
(Internal output)
set value
OUT1 CH1 control output
OUT2 CH2 control output
0
OUT3 CH3 control output
OUT4 CH4 control output
OUT1 CH1 control output
OUT2 CH2 control output
1
OUT3 CH3 control output
OUT4 CH4 control output
OUT1 CH1 control output
OUT2 CH2 control output
2
OUT3 CH3 control output
OUT4 CH4 control output
OUT1 CH1 control output
OUT2 CH2 control output
3
OUT3 CH3 control output
OUT4 CH4 control output
OUT1 CH1 control output
OUT2 CH2 control output
4
OUT3 CH3 control output
OUT4 CH4 control output
OUT1 CH1 control output
OUT2 CH2 control output
5
OUT3 CH3 control output
OUT4 CH4 control output
OUT1 CH1 control output
OUT2 CH2 control output
6
OUT3 CH3 control output
OUT4 CH4 control output
OUT1 CH1 control output
OUT2 CH2 control output
7
OUT3 CH3 control output
OUT4 CH4 control output
*1. When selecting control mode "4" or "5", use external output for CH2 and CH4.
Caution
It is not possible to change the setting while control is being performed. If the setting is changed while control
is being performed, the contents of setting are reflected when control is stopped.
36
→ For details on the control mode switch, refer to Section 6.2.
Control mode [BFM#240 (CH1, CH2), BFM#241 (CH3, CH4)]
2, 3 : PID control
(External output)
Normally OFF
Normally OFF
Normally OFF
Normally OFF
CH1 control output
CH2 control output
CH3 control output
CH4 control output
CH1 control output
CH2 control output
CH3 control output
CH4 control output
CH1 alarm 1 state
CH2 alarm 1 state
CH3 alarm 1 state
CH4 alarm 1 state
CH1 alarm 2 state
CH2 alarm 2 state
CH3 alarm 2 state
CH4 alarm 2 state
CH1 alarm 3 state
CH2 alarm 3 state
CH3 alarm 3 state
CH4 alarm 3 state
CH1 alarm 4 state
CH2 alarm 4 state
CH3 alarm 4 state
CH4 alarm 4 state
CH1 loop breaking alarm state
CH2 loop breaking alarm state
CH3 loop breaking alarm state
CH4 loop breaking alarm state
6.3 Transistor Output Selection Function
4, 5 : Heating/cooling
PID control
*1
(Internal output)
CH1 heating control output
CH1 cooling control output
CH3 heating control output
CH3 cooling control output
CH1 heating control output
CH1 cooling control output
CH3 heating control output
CH3 cooling control output
CH1 heating control output
CH1 cooling control output
CH3 heating control output
CH3 cooling control output
CH1 heating control output
CH1 cooling control output
CH3 heating control output
CH3 cooling control output
CH1 heating control output
CH1 cooling control output
CH3 heating control output
CH3 cooling control output
CH1 heating control output
CH1 cooling control output
CH3 heating control output
CH3 cooling control output
CH1 heating control output
CH1 cooling control output
CH3 heating control output
CH3 cooling control output
CH1 heating control output
CH1 cooling control output
CH3 heating control output
CH3 cooling control output
6 Introduction of Functions
6, 7 : Heating/cooling
PID control
(External output)
Normally OFF
Normally OFF
Normally OFF
Normally OFF
CH1 heating control output
CH2 heating control output
CH3 heating control output
CH4 heating control output
CH1 cooling control output
CH2 cooling control output
CH3 cooling control output
CH4 cooling control output
CH1 alarm 1 state
CH2 alarm 1 state
CH3 alarm 1 state
CH4 alarm 1 state
CH1 alarm 2 state
CH2 alarm 2 state
CH3 alarm 2 state
CH4 alarm 2 state
CH1 alarm 3 state
CH2 alarm 3 state
CH3 alarm 3 state
CH4 alarm 3 state
CH1 alarm 4 state
CH2 alarm 4 state
CH3 alarm 4 state
CH4 alarm 4 state
Normally OFF
Normally OFF
Normally OFF
Normally OFF