Service Guide MINI SPEED
Service Guide MINI SPEED
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:
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.
Irreversible protection:
REVERSIBLE FAULT
Is activated when the power supply come out from
the table described below.
Over under voltage
MODEL UNDER VOLTAGE OVER VOLTAGE
MS 60 20 V 84 V
MS 140 40 V 182 V
MS 200 58 V 275 V
Is activated when the IxT cycle of the amplifier
is exceeded.
Limit of the current
IRREVERSIBLE FAULT
The power switching bridge is provided with a
termoswitch wich opens when the temperature
exceeds a safe operating level.
Temperature (S.T.)
Is activated when tachogenerator is open, short
circuited, or reversal,for preventing motor
runaway.
Is activated when there is a short circuit on the
motor.
Broken tacho generator
Short Circuit
1.2 Technical specifications
Power supply voltage and rated current for every model.
Model
Power supply (Vdc)
MS 60
24 - 60 *
MS 140
40 - 140 *
MS 200
100 - 200 *
Sizes
Rated Current Peak Current (A)
2/4
4/8
8/16
10/20
14/28
20/40
25/50
2
4
4
8
8
16
10
20
14
28
20
40
25
50
- Size avalaible for all models
- Rated current . See derating curves pag 18.
- Rated current is adjustable between 5% to 100% by Rin.
- Peak current is adjustable between 50% to 100% by Rip.
* These are values reccomended from factory.
Min and max voltage values are reported at page 32.
Input reference
Drift (referred to differential
reference amplifier)
Drift (referred to differential speed
amplifier)
Input-output demand current
Enable signal
Minimum tacho signal at max
speed
Output voltage for external use
Motor current monitor
Operating Temperature
Humidity
Altitude
Weight
Differ/- 10V (input impedance 20K Ohm)
+/- 18 micro V/C° (max)
+/- 18 micro V/C° (max)
+/- 10V (input impedance 47K )
10 / 30 VDC (input impedance 10K )
5V
+10V, -10V (5mA max)
+/- 8V (corriepond at peak current)
0 / 40 C°
80% max (without condensation)
0 / 1000 m s.l.d.m.
510 gr