ABB AC500 PLC - State LEDs; Measuring Ranges; Input Ranges Voltage, Current and Digital Input

State LEDs
LED State Color LED = OFF LED = ON LED flashes
DI0 to DI15 Digital input Yellow Input is OFF
Input is ON
1
)
--
DC16 to
DC23
Digital input/
output
Yellow Input/output
is OFF
Input/output is
ON
1
)
--
AI0 to AI3 Analog input Yellow Input is OFF
Input is ON
2
)
--
AO0 to
AO1
Analog
output
Yellow Output is
OFF
Output is ON
2
)
--
UP Process
supply
voltage
24 VDC via
terminal
Green Process
supply
voltage is
missing
Process
supply voltage
OK
--
CH-ERR1 Channel
error, error
messages in
groups (dig-
ital inputs/
outputs com-
bined into the
groups 1, 2,
3, 4)
Red No error or
process
supply
voltage is
missing
Severe error
within the cor-
responding
group
Severe error
within the cor-
responding
group (e.g.
short circuit at
an output)
CH-ERR2 Red
CH-ERR3 Red
CH-ERR4 Red
CH-ERR
3
)
Module error Red -- Internal error --
1
) Indication LED is ON even if an input signal is applied to the channel and the
supply voltage is off. In this case the module is not operating and does not gen-
erate an input signal.
2
) Brightness depends on the value of the analog signal
3
) All of the LEDs CH-ERR1 to CH-ERR4 light up together
Measuring Ranges
Input Ranges Voltage, Current and Digital Input
Range 0...10 V -10...+10 V 0...20 mA 4...20 mA Digital input
Overflow > 11.7589 > 11.7589 > 23.5178 > 22.8142
Measured
value too high
11.7589
:
10.0004
11.7589
:
10.0004
23.5178
:
20.0007
22.8142
:
20.0006
Normal range
Normal range
or measured
value too low
10.0000
:
0.0004
10.0000
:
0.0004
20.0000
:
0.0007
20.0000
:
4.0006
on
0.0000 0.0000 0 4 off
-0.0004
-1.7593
-0.0004
:
:
:
-10.0000
3.9994
:
0
Device Specifications
I/O Modules > Digital/Analog I/O Modules
2019/04/173ADR010121, 13, en_US592