Infanor SMT-BD1/m, Manual, Page: 53 / 58

53
SMT-BD1/m
Appendix
5.2.2 - CURRENT LOOPS ADJUSTMENT ON DRIVES WITH 220 VAC SUPPLY
Select the current loop jumpers corresponding to the motor and drive specifications (position B1, B2 or B3).
On the MAVILOR motor series BL and MA, the current loops adjustments are made according to the table below:
Drive 4 A 8 A 12 A 17 A 30 A 45 A 60 A 70 A 100 A
Motor
MA 3 B1
MA 6 B1 B1
MA 10 B2 B1 B1 B1
MA 20 B2 B1 B1 B1 B1 B1
MA 30 B2 B2 B2 B1 B1
MA 45 B2 B2 B1 B1 B1
MA 55 B2 B2 B2 B1
BL 55-3 B1
BL 55-5 B1
BL 71 B2
BL 72 B2 B1 B1
BL 73 B2 B2 B1
BL 74 B2 B2 B1
BL 111 B1 B1
BL 112 B2 B2 B1 B2
BL 113 B3 B3 B2 B2 B2
BL 114 B3 B3 B2 B2
BL 115 B3 B3 B2 B2 B2
BL 141 B2 B2 B2 B1 B1
BL 142 B3 B3 B2 B2 B1
BL 143 B3 B2 B2 B1 B1 B1
BL 144 B2 B2 B2 B1 B1 B1
On other motor types, the current loops are adjusted according to the
drive current rating and to the
inductance between the motor terminals like follows:
4 A, 8 A, 12 A AND 17 A DRIVES
- Calculation
of G = 1.4 x Drive current rating (A) x Inductance between phases (mH).
- If G < 60 , current loop jumpers (x3) on B3 position.
- If 60 < G < 100 , current loop jumpers (x3) on B2 position.
- If G > 100 , current loop jumpers (x3) on B1 position.
30 A, 45 A, 60 A, 70 A AND 100 A DRIVES
- Calculation
of G = 1.4 x Drive current rating (A) x Inductance between phases (mH).
- If G < 100 , current loop jumpers (x3) on B3 position.
- If 100 < G < 250 , current loop jumpers (x3) on B2 position.
- If G > 250 , current loop jumpers (x3) on B1 position.
5.3 - I
2
t PROTECTION
Current limitation in
Fusing mode
When the amplifier RMS current (I
2
t) reaches 85 % of the Rated current , the Idyn signal output is activated and
the I
2
t error display is blinking on the amplifier front panel. If the RMS current (I
2
t) has not dropped below 85 % of
the Rated current within 1 second, the I
2
t fault is released and the amplifier is disabled (otherwise, the Idyn signal
and the blinking I
2
t error display are both cancelled).
When the amplifier RMS current (I
2
t) reaches the Rated current value, the I
2
t protection limits the amplifier
current at this value.
The amplifier current limitation diagram in an extreme case (motor overload or locked shaft) is shown below.