YOKOGAWA UP55A - Page 390

16-5
IM 05P02C41-01EN
Troubleshooting, Maintenance, and Inspections
16
Errors during Operation (Input/output Action)
Error
description
PVinput,RSP

input,
andaux.analoginput
Ladder
calcula-
tion
Control
compu-
tation
Control
output
Retrans-
mission
output
Alarm
action
Analog out-
put (control
output,
retransmis-
sion output)
V
oltage
pulse output
(control
output)
Relayoutput

(control out-
put,

position

proportional
output)
Feedback
input
(for
Position
proportional
type)
Contact
input
Contact
(alarm)
output
Com-
munica-
tion
Analog input terminal ADC error
• PV input
• RSP input (E1-terminal area)
• AIN2 input (E2-terminal area)
• AIN4 input (E4-terminal area)
105%
Normal
action
Normal
action
When in
AUTO and
RUN modes:
Error preset
output
When in MAN
mode: MAN
output
Normal
action
Normal
action
Normal
action
Normal
action
Normal
action
Normal
action
Normal
action
Normal
action
Normal
action
Universal input terminal RJC
error
• PV input
• RSP input (E1-terminal area)
Normal action
(without reference
junctioncompensation)
Normal
action
Normal
action
Normal
action
Normal
action
Normal
action
Normal
action
Normal
action
Normal
action
Normal
action
Normal
action
Normal
action
Normal
action
Analog input terminal burnout
error
• PV input
• RSP input (E1- terminal area)
• AIN2 input (E2-terminal area)
• AIN4 input (E4-terminal area)
Depends on the
parameter BSL.
Upscale: 105%
Downscale: -5%
Normal
action
Normal
action
Normal
action
Normal
action
Normal
action
Normal
action
Normal
action
Normal
action
Normal
action
Normal
action
Normal
action
Normal
action
PV input burnout error
(Loop1, Loop2)
Depends on the setting
of the parameter BSL
of the analog terminal
connected to the PV
where the error occurs.
Upscale: 105%
Downscale: -5%
When in
AUTO and
RUN modes:
Error preset
output
When in MAN
mode: MAN
output
PV input over-scale
PV input under-scale
(PV values out of -5 to 105%)
(Loop1, Loop 2)
Normal action
Normal
action
Normal
action
Normal
action
Normal
action
Normal
action
Normal
action
Normal
action
Normal
action
Normal
action
Normal
action
Normal
action
Normal
action
RSP input burnout error
(Loop 1)
Depends on the setting
of the parameter BSL
of the analog terminal
connected to the RSP
where the error occurs.
Upscale: 105%
Downscale: -5%
Normal
action
Normal
action
Normal
action
Normal
action
Normal
action
Normal
action
Normal
action
Normal
action
Normal
action
Normal
action
Normal
action
Normal
action
16.1Troubleshooting