Protection Circuit; Reversible Fault; Reversible Protection; Irreversible Protection - Axor Minispeed MS 60 Service Manual

CHAPTER 5 - Signalling and fault research

5.2 Protection circuit

Minispeed amplifier has protective circuits for safeguard the servomotor and the amplifier
too.All protections are annunciated in front of the amplifier.(see page 31)
When a protection goes on it provokes the memorization of the alarm,switch off of the
green OK led and disable 2ac pin(interdiction of the transistor=off).
When In red led is on this donʼt provokes the memorization of the alarm but disable 2ac
out (interdiction of the transistor=off),but if JP9 solder bridge is closed.
There are two types of faults:reversable or irreversible.

Reversible protection:

Irreversible protection:

REVERSIBLE FAULT

Over under voltage
Limit of the current
IRREVERSIBLE FAULT
Temperature (S.T.)
Short Circuit
Broken tacho generator
AXOR
High Performans servo Drives
The amplifier will enable as soon as the current
or voltage returns to on acceptable operating
level.
The amplifier wonʼt enable.We must switch off the
power supply,eliminate the fault cause and start
again the amplifier after a minimum amount of time
for be sure of complete capacitors discharge.
Is activated when the power supply come out from
the table described below.
MODEL UNDER VOLTAGE
MS 60
MS 140
MS 200
Is activated when the IxT cycle of the amplifier
is exceeded.
The power switching bridge is provided with a
termoswitch wich opens when the temperature
exceeds a safe operating level.
Is activated when there is a short circuit on the
motor.
Is activated when tachogenerator is open, short
circuited, or reversal,for preventing motor
runaway.
20 V
40 V
58 V
Service Guide
!
OVER VOLTAGE
84 V
182 V
275 V
MINI SPEED