Watson-Marlow Varmeca 30 - Manual (Page 11)

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INSTALLATION AND MAINTENANCE
VARMECA 30
Variable speed motor or geared motor
GENERAL INFORMATION
LEROY-SOMER 3776 en - 07.2007 / h
en
1.5.3 - Standards (Immunity)
The minimum immunity level is set by the generic industrial (EN 51000-6-2) and residential (EN 51000-6-1) standards.
VARMECA 30 conforms to the following standards:
EN 61000-4-2, IEC 61000-4-2 - EN 61000-4-3, IEC 61000-4-3 - EN 61000-4-5, IEC 61000-4-5 - EN 61000-4-6, IEC 61000-4-6 EN
61000-4-11, IEC 61000-4-11 - EN 61000-6-2, IEC 61000-6-2 - EN 61000-3, IEC 61000-3.
Immunity
Standard Description Application Conformity
IEC 61000-4-3 Immunity standards for radiated
radio-frequency
Product casing Level 3 (industrial)
EN 61000-4-3
IEC 61000-4-6 Generic immunity standards for
conducted radio-frequency
Control and power cables
shielded cables outside product
Level 3 (industrial)
EN 61000-4-6
EN 50082-1 Generic immunity standards for
residential, commercial and light
industrial environments
- Conforms IEC 61000-6-1
EN 61000-6-1
EN 50082-2
Generic immunity standards for the
industrial environment
- Conforms IEC 61000-6-2
EN 61000-6-2
EN 61800-3
Variable speed drive standards Conforms to the first and second environment IEC 61000-6-2
EN 61000-6-2
EN 61000-4-4 Bursts of fast transients Control cable Level 4 (hardened industrial)
Power cable Level 3 (industrial)
EN 61000-4-5 Shock waves Phase-earth power supply cable Level 4
Phase-to-phase power supply
cable
Level 3
Earth signal circuits
(refer to section 1.5.5)
Level 2
1.5.4 - Earth leakage current
Earth leakage currents may depend on the type of EMC filter
used. The VARMECA 30 can be supplied with its filter
integrated and wired-up. The levels of leakage current also
depend on the voltage and/or the power supply frequency
and the size of the motor.
In all cases, for conformity with immunity standards, a voltage
limiting device is connected to earth. The shunt current is
negligible in normal circumstances.
1.5.4.1 - use of earth leakage detector (residual current
device)
1- Type AC: which detects AC faults. Not to be used with
variable speed drives.
2- Type A: which detects AC faults and pulsed DC faults
(provided that the DC is cancelled out at least once per cycle).
Only for use with single-phase drives.
3 - Type B: which detects AC faults, pulsed DC faults and
smoothed DC faults.
Only this type is suitable for use with
all variable speed drives.
Note: If an external EMC filter is being used, a delay of 50 ms
should be incorporated to avoid spurious faults being taken
into account.
1.5.5 - Control cable immunity
Control cable immunity can be increased outside the
VARMECA 30 by one of the following 2 methods:
• Use of shielded twisted pair cable, with shielding connected
to earth around its circumference within 100 mm of the
VARMECA 30.
• Passing the cable through a ferrite ring at 100 mm maximum
distance from the VARMECA 30.
Note: Several control cables can pass through a single
ferrite.
1.5.6 - Control circuit immunity when
overvoltage occurs
Immunity to overvoltages in control circuits or in long cables
connected to the outside of a building.
The various drive input and output circuits conform to
standard EN61000-6-2 (1 kV) relating to overvoltages.
There are some exceptions, where the installation may be
exposed to overvoltage peaks which exceed the levels
determined by the standard. This may be the case in the
event of lightning strikes or earth faults associated with long
cable lengths (>30 m). To limit the risks of damage to the
drive, the following precautions could be taken: