Diagnosis and Displays

Diagnosis:

E1..E4 d1 d2 d3 d4

Identifier

000..063

 AC500 display <− Display in
Class Comp Dev Mod Ch Err PS501 PLC browser

Byte 6

Bit 6..7

 - Byte 3 Byte 4 Byte 5

Byte 6

Bit 0..5

 FBP diagnosis block
Class Interface Device Module Channel Error identifier Error message Remedy
 
     
Module error AI531
3 14 1..10 31 31 19 Checksum error in the I/O module Replace I/O module
11 / 12 ADR 1..10
3 14 1..10 31 31 3 Timeout in the I/O module Replace I/O module
11 / 12 ADR 1..10
3 14 1..10 31 31 40 Different hard-/firmware versions in the module Replace I/O module
11 / 12 ADR 1..10
3 14 1..10 31 31 43 Internal error in the module, e.g. internal analog voltage is not proper Replace I/O module
11 / 12 ADR 1..10
3 14 1..10 31 31 36 Internal data exchange failure Replace I/O module
11 / 12 ADR 1..10
3 14 1..10 31 31 9 Overflow diagnosis buffer Restart
11 / 12 ADR 1..10
3 14 1..10 31 31 26 Parameter error Check master
11 / 12 ADR 1..10
3 14 1..10 31 31 11 Process voltage too low Check process voltage
11 / 12 ADR 1..10
4 14 1..10 31 31 45 Process voltage is switched OFF (ON −> OFF) Process voltage ON
11 / 12 ADR 1..10
Channel error AI531
4 14 1…10 1 0…7 48 Analog value overflow or broken wire at an analog input Check input value or terminal
11 / 12 ADR 1…10  
4 14 1…10 1 0…7 7 Analog value underflow at an analog input Check input value
11 / 12 ADR 1…10
4 14 1…10 1 0…7 47 Short-circuit at an analog input Check terminal
11 / 12 ADR 1…10
4 14 1…10 1 0…7 1 Possibly wrong measured value caused by inadmissible temperature of the compensation channel Check the temperature compensation channel
11 / 12 ADR 1…10
4 14 1…10 1 0…7 2 Invalid measured value of the channel caused by too high voltage difference Check voltage difference; install equalizing conductors if necessary
11 / 12 ADR 1…10
4 14 1…10 1 0…7 11 Output voltage 10 V faulty Check output load
11 / 12 ADR 1…10

Remarks:

In AC500 the following interface identifier applies:

14 = I/O-Bus,  11 = COM1 (e.g. CS31 bus), 12 = COM2.

The FBP diagnosis block does not contain this identifier.

With “Device” the following allocation applies:

31 = Module itself, 1..10 Expansion module 1..10, ADR = Hardware address (e.g. of the DC551)

With “Module” the following allocation applies dependent of the master:

Module error: I/O-Bus or FBP: 31 = Module itself; COM1/COM2: 1..10 = Expansion 1..10

Channel error: I/O-Bus or FBP = Module type (1 = AI); COM1/COM2: 1..10 = Expansion 1..10
In case of module errors, with channel “31 = Module itself” is output.

Displays:

During the power ON procedure, the module initializes automatically. All LEDs (except the channel LEDs) are ON during this time.

Status of the LEDs (see also section Diagnosis LEDs in the S500 system data)

LED Status Color LED = OFF LED = ON LED flashes

Inputs

00 … 03

and

04 … 07

 analog input yellow input is OFF Input is ON (brightness depends on the value of the analog signal) –
UP Process voltage 24 V DC via terminal green Process voltage is missing Process voltage OK –
CH-ERR2 Channel error, messages in groups (analog inputs combined into the groups 2 and 4) red no error or process voltage is missing serious error within the corresponding group error on one channel of the group
CH-ERR4 red
CH-ERR *) Module error red – internal error –
*) Both LEDs CH-ERR2 and CH-ERR4 light up together