Memobus/Modbus Comm. Test Mode Complete; Pg Disconnect (For Simple V/F With Pg); Motor Switch During Run - YASKAWA V1000 Series Installation & Start-Up Manual

5.5 Alarm Detection
Cause
Surge voltage present in the
drive input power.
• The motor has short-
circuited.
• Ground current has
over-charged the main circuit
capacitors via the drive input
power.
Noise interference causes the
drive to operate incorrectly.
LED Operator Display
PASS
Cause
MEMOBUS/Modbus test has
finished normally.
LED Operator Display
PGo
Cause
Pulse input (RP) is
disconnected.
Pulse input (RP) wiring is
wrong.
Motor brake is engaged.
LED Operator Display
rUn
Cause
214
• Install a DC reactor or an AC reactor.
• Voltage surge can result from a thyristor convertor and a phase
advancing capacitor operating on the same drive input power
system.
• Check the motor power cable, relay terminals and motor
terminal box for short circuits.
• Correct grounding shorts and turn the power back on.
• Review possible solutions for handling noise interference.
• Review section on handling noise interference and check
control circuit lines, main circuit lines and ground wiring.
• If the magnetic contactor is identified as a source of noise,
install a surge protector to the MC coil.
Set number of fault restarts (L5-01) to a value other than 0.

MEMOBUS/Modbus Comm. Test Mode Complete

This verifies that the test was successful.

PG Disconnect (for Simple V/f with PG)

Detected when no PG pulses received for a time longer than setting in F1-14.
Reconnect the pulse input (RP).
Correct the wiring.
Ensure the brake releases properly

Motor Switch during Run

A command to switch motors was entered during run.
YASKAWA ELECTRIC TOEP C710606 09B YASKAWA AC Drive V1000 Installation & Start-Up Manual
Possible Solutions
Minor Fault Name
Possible Solutions
Minor Fault Name
Possible Solutions
Minor Fault Name
Possible Solutions
Minor Fault (H2-
= 10)
YES
YES
YES
YES
Minor Fault
Output
(H2- = 10)
No output
Minor Fault
Output
(H2- = 10)
YES
YES
YES
Minor Fault
Output
(H2- = 10)