Yokogawa PR300 Power and Energy Meter - Manual (Page 56)

Troubleshooting
5-1 IM 77C01E01-01E
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5.1 Error Display and Recommended Response
Failure at the Time of Turning on the Power and during Operation
Recommended
response
Request
repair.
Upper display
of measured
value display
Error display Status
Power
lamp
Phase and
wire system
lamp
Communi
-cation
lamp
Pulse
lamp
Unstable Off Off
Off
Normal
action
Normal
action
Communi-
cation
Disabled Disabled Disabled Disabled Off
Power
calculation
Disabled
Pulse output
(contact
point)
Analog
output
Demand
alarm
Type of fault
RAM error
ROM error
System data
fault
Calibration
data fault
Parameter
fault
Backup fault
Normal
action
Off
Normal
action
Normal
action
Disabled
Normal
action
Disabled Disabled Disabled
Normal
action
Normal
action
EEPROM
error
ADC error
Errors during Operation
Recommended
response
Confirm the
input.
The product is
restored when
a normal frame
is received.
Upper display
of measured
value display
Error display Status
Power
lamp
Phase and
wire system
lamp
Communi
-cation
lamp
Pulse
lamp
On
Blinks at
intervals of
125
milliseconds.
Normal
action
Normal
action
Normal
action
Normal
action
Normal
action
Normal
action
Normal
action
Normal
action
Communi-
cation
Power
calculation
Pulse output
(contact
point)
Analog
output
Demand
alarm
Type of fault
Measured
input error
Communication
error
blinking
Normal
action
Errors at the Measured input error
Measurment items
Active power
Reactive power
Apparent power
Voltage
Current
Power factor
Frequency
Measured input error conditions
120% or more of “secondary rated
power
ϫ VT ratio ϫ CT ratio”
120% or more of
“voltage range
ϫ VT ratio”
Less than 10% of
“voltage range
ϫ VT ratio”
120% or more of
“current range
ϫ CT ratio”
Out of the measuring range
(LEAD 0.5 to 1 to LAG 0.5)
Out of the measuring range (45 to 65 Hz)
Error display
and the measured value
blink alternately
Recommended response
The error is cleared by inputting a
measured value less than 120%.
The error is cleared by inputting a
measured value less than 120%.
The error is cleared by inputting a
measured value within the
measuring range.
The error is cleared by inputting a
measured value 10% or more.
Errors at the Time of Setting Parameters
Example
The setpoint is out of the range.
Error display
and the setpoint blink alternately on
the display.
Recommended response
The error is cleared by setting a value
within the range.
Chapter 5 Troubleshooting