IAI America ACON-CG User Manual
Page 173
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159
10. T
roubleshooting
10.6 Specific Problems
z I/O signals cannot be exchanged with the PLC.
Cause: [1] The 24-V I/O power supply is connected in reverse.
[2] If the problem is with an output circuit, a circuit component may have been damaged due to a
large load that caused the current flowing into the circuit to exceed the maximum current.
[3] Contact failure in the connector or relay terminal block on the PLC end.
[4] Contact failure between the female pins in the flat cable connector and the male pins on the
controller due to expanded female pins.
Action: Check the connection condition of the power supply and connector, as well as the load on the
output side.
If the cause is identified as [1] or [2], the controller must be replaced. If there is a possibility of [4],
the flat cable must be replaced. Please contact IAI.
Warning: When performing a continuity check of the flat cable, pay due attention not to expand
the female pins in the connector. It may cause contact failure and disable normal
operation of the controller.
z The ALM lamp illuminates when the power is input.
(An alarm is present, or an emergency stop has been actuated or the motor power cut off.)
* If the ALM output signal is OFF, an alarm is present. Connect a PC or teaching pendant to check the
nature of the error and then remove the cause.
* If the ALM output signal is ON, the emergency stop circuit has been actuated. Check the following points,
among others:
[1] Is the emergency-stop switch on the operation panel pressed or any necessary interlock released?
[2] Is the emergency-stop switch on the teaching pendant pressed?
[3] If multiple controllers are connected, is the crossover wiring correct?
z The SV lamp does not illuminate when the servo ON signal is input after the power was input.
(The servo does not turn ON.)
Cause: [1] Contact failure of the flat cable
[2] Faulty controller
Check the servo ON signal (SON) on the I/O monitor screen of the PC or teaching pendant.
If the signal is input, probably the controller is faulty. Please contact IAI.
[3] Is parameter No. 42 (Enable function) enabled by mistake by connecting a teaching pendant not
supporting the enable switch?
- ERC2
- ERC2
- ERC3
- ERC
- RCA-E
- RCA-P
- RCB-101-MW
- RCP2-CF
- RCS-E
- RCS2-A6R
- RCAW
- RCP2-SRGD4R
- RCA2-SD4N
- RCA2-SA6R
- RCA2-TW4N
- RCD-RA1D
- RCP2-BA7U
- RCP2W-GRLS
- RCP2CR-SS8C
- RCP2W-RA10C
- RCP2-RTCBL
- RCP2W-SA16C
- RCP3-RA2BR
- RCP4-RA6R
- RCP4CR-SA7C
- RCP4W
- RCS2W
- RCS2-GR8
- RCS2-SD5N
- RCS2-RTC12L
- RCS3PCR-SS8C
- RCS2-TFA5N
- RCL-SM6L
- RCL-RA3L
- RCLE-GR5L
- IK Series
- FS
- IF
- SSPA
- ISPDACR-ESD
- SSPDACR
- ISWA
- NS
- NS
- RS
- ZR-M
- SSCR
- DS-S-C1
- DS-S-P1
- DS-S-T1
- LSA-L15SS
- LSAS-N15HM
- LSA-S10SS
- LSA-W21SS
- ICS(P)A
- LSA
- CT4
- IX-INN8040H
- IX-INN8040
- IX-NNW3515H
- IX-NSN6016H
- IX-NNN12040
- IX-NNN1805
- IX-NNC3515
- IX-NNC8040
- IX-NNN3515
- IX-NNN8040
- IX-NNW3515
- IX-NNW8040
- IX-NSN6016
- IX-UNN3515H
- IX-UNN3515
- XSEL-KX
- XSEL-S
- XSEL-QX
- XSEL-S
- XSEL-S
- XSEL-S
- XSEL-S
- XSEL-S
- XSEL-S
- S-SEL-E
- TT-C3
- PCON-CFA
- PCON-CFA
- PCON-CFA
- PCON-CFA
- PCON-CFA
- PCON-CFA
- PCON-CFA
- E-Con
- SCON-CA
- ACON-CY
- ACON-PO
- ACON-SE
- ASEL
- E-Con
- E-Con
- TTA
- PSEP
- MSEP
- PCON-CF
- PCON-CA
- PCON-CY
- PCON-PO
- PCON-SE
- PSEL
- SCON-C
- E-Con
- MSCON
- SSEL
- XSEL-KE
- XSEL-KET
- RCS-C
- RCM-GW-DV
- RCM-GW-CC
- RCM-GW-PR
- ROBO Cylinder Series
- REXT
- XSEL Ethernet
- PCON-ABU
- PS-24
- IA-IO-3205-PN
- TU-MA96-P
- RCB-ISL-SIO