Description Of Cables And Protection Devices - Leroy-Somer VARMECA 30 Instalación Y Mantenimiento

LEROY-SOMER
- Galvanic isolation of the I/O.
- Duplication of the cable shielding with an earth wire of
10 mm 2 minimum. The cable shielding and the earth wire
must be linked at both ends and connected to earth with the
shortest possible connection. This stratagem enables high
currents to pass into the earth wire, rather than into the
shielding
- Reinforcement of the logic and analogue I/O protection by
adding a zener diode or a peak limiter.
Elimination of uni-directional logic and analogue I/O
overvoltages
Signal
0V

1.6 - Description of cables and protection devices

• It is the responsibility of the user to connect and provide protection for the VARMECA 30 in accordance with the
legislation and regulations in force in the country of use. This is particularly important as regards the size of cables,
the type and rating of fuses, the earth or ground connection, powering down, acknowledging faults, insulation and
protection against overcurrents.
• These tables are given for information only, and must under no circumstances be used in place of the current standards.
• When using a circuit-breaker, it must be a motor circuit-breaker (D curve).
• The residual current device must be type B. Too many devices connected to a single residual current device can cause
it to trip. Check that the circuit-breaker is only protecting the VARMECA.
• Comply with the size of protection fuses.
Single-phase power supply 110V - 10 % to 120V + 10 %
P
VMA Fuses
(kW)
rating (gG)
0.25 31 ML 025
0.37 31 ML 037
0.55
0.75
0.9
1.1
1.5
46
INSTALLATION AND MAINTENANCE
VARMECA 30
Variable speed motor or geared motor
GENERAL INFORMATION
to the drive
30 V Zener diode
(eg: 2xBZW50-15
0V
Cables
I (A)
2
(mm )
8 6.8 1.5
10 8.5 1.5
These circuits are available in modules (DIN rail mounting).
These circuits are not suitable for encoder signals or for high-
speed logic data networks, because the diodes may affect the
signal. The majority of encoders have galvanic isolation
between the motor casing and the encoder circuit, and in this
case, no precautions are necessary. For data networks,
follow the specific network recommendations.
If a logic output is subjected to significant overvoltages, the
drive trips on an "Old1" fault.
Single-phase power supply 208V - 10 % to 240V + 10 %
VMA
PE
rating
M16 + M20 31 M 025
M16 + M20 31 M 037
31 M 055
31 M 075
32 M 090
32 M 110
32 M 150
3776 en - 07.2007 / h
Fuses Cables
I (A)
(gG) 2
(mm )
8 3.5 1.5
10 4 1.5
10 4.5 1.5
16 7 2.5
16 9 2.5
20 11 2.5
25 14 2.5
PE
M16 + M20
M16 + M20
M16 + M20
M16 + M20
M16 + M20
M16 + M20
M16 + M20