Ground Leakage; Emc (Electromagnetic Compatibility); Figure 4-13 Protection Circuit For An External Suppression; Table 4-19 Minimum Allowable External Suppression Resistance - Emerson MP25A4 User Manual

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Table 4-19 Minimum allowable external suppression resistance

Model
MP25A4(R) MP25A5(R)
MP45A4(R) MP45A5(R)
MP75A4(R) MP75A5(R)
MP105A4(R) MP105A5(R)
MP155A4(R) MP155A5(R)
MP210A4(R) MP210A5(R)
MP350A5(R)
MP350A4(R)
MP350A6(R)
MP470A5(R)
MP420A4(R)
MP470A6(R)
MP550A4(R)
MP700A5(R)
MP700A4(R)
MP700A6(R)
MP825A5(R)
MP825A4(R)
MP825A6(R)
MP900A4(R)
MP1200A5(R)
MP1200A4(R)
MP1200A6(R)
MP1850A5(R)
MP1850A4(R)
MP1850A6(R)
Overload Protection
When using an external suppressor resistor of a resistance or
power rating less than the recommended rating, it is essential
that an overload protection device is incorporated in the
WARNING
resistor circuit (refer to Figure 4-13).
External suppressor resistor protection parameter settings
The software provided by the Mentor MP provides overload
protection. Failure to correctly configure Pr 11.62, Pr 11.63
and Pr 11.64, as described in the Mentor MP Advanced User
WARNING
Guide could lead to the resistor being overloaded.
Figure 4-13 Protection circuit for an external suppression resistor
L1
L2
L3
Main contactor
supply
Start/Reset
46
Electrical Getting Basic
installation started parameters
Resistance
Ω
500 (maximum 150W)
500 (maximum 300W)
L1
L2
L3
Drive
Thermal protection
device
External
resistor
connections
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Running the SMARTCARD
Optimization
motor operation
4.8

Ground leakage

The ground leakage current depends on whether an external EMC filter
is installed. Ground leakage currents for external EMC filters can be
obtained from the manufacturers data sheet for the filter being used.
With no external EMC filter:
<1mA
4.8.1 Use of residual current device (RCD)
There are three common types of ELCB / RCD:
1. AC - detects AC fault currents
2. A - detects AC and pulsating DC fault currents (provided the DC
current reaches zero at least once every half cycle)
3. B - detects AC, pulsating DC and smooth DC fault currents
• Type's A and AC should never be used with Mentor MP drives.
• Type B must be used with all Mentor MP drives.
Only type B ELCB / RCD are suitable for use with Mentor
MP drives.
WARNING
If an external EMC filter is used, a delay of at least 50ms should be
incorporated to ensure spurious trips are not seen. The leakage current
is likely to exceed the trip level if all of the phases are not energized
simultaneously.
NOTE
The installer of the drive is responsible for ensuring compliance with the
EMC regulations that apply where the drive is to be used.
4.9

EMC (Electromagnetic compatibility)

The Mentor MP meets immunity requirements (specified in Table 12-
43 Immunity compliance on page 164) with no special precautions.
N
NOTE
Some special measures may be required in certain applications where
the control cables are long or pass outside the building. See section
4.9.4 Surge immunity of control circuits - long cables and connections
outside a building on page 47.
Radio frequency noise emission can occur from any of the power
connections i.e. main and auxiliary A.C connections, armature and field
output terminals.
For many applications in heavy industrial environments the noise
emission is not sufficient to cause interference to other equipment.
When radio frequency emission must be limited the method used should
be chosen to suit the situation.
4.9.1 Power drive systems standard
Compliance with the EMC standard for power drive systems (PDS) IEC
61800-3, EN 61800-3 category C3
To meet this standard a standard armature filter and a standard field filter
must be installed. See Table 4-20 Mentor MP and EMC filter cross
references on page 47 for EMC filter cross references.
Shielded cables must be used for the field and armature and the shields
must be clamped to ground at both ends. The standard is met for cable
lengths up to 100m.
4.9.2 Generic standard and PDS category C2
Compliance with the generic emission standards for industrial
environments category IEC 61000-6-4 and EN 61000-6-4, and the PDS
standard category C2.
To meet this standard a standard field filter and a high performance
armature filter must be installed. See Table 4-20 Mentor MP and EMC
filter cross references on page 47 for EMC filter cross references.
Shielded cables must be used for the field and armature and the shields
must be clamped to ground at both ends. The standard is met for cable
lengths up to 100m.
Onboard Advanced Technical
Diagnostics
PLC parameters data
Mentor MP User Guide
UL
information
Issue: 3