LEXIUM MHDA1004, Руководство пользователя

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18
The 17D Series Servo Drive Family, continued
Electrical
Considerations The Lexium 17D family of servo amplifiers is to be used on earthed three-phase
industrial mains supply networks (TN-system, TT-system with earthed neutral
point, not more than 5000 rms symmetrical amperes).
Periodic overvoltages between outer conductor (L1, L2, L3) and housing of the
servo amplifier may not exceed 1000V (peak value). Transient overvoltages (<
50µs) between the outer conductors may not exceed 1000V. Transient
overvoltages (< 50µs) between outer conductors and housing may not exceed
2000V.
The Lexium 17D drives are incompatible with the IT system because interference
suppression filters are internal and connected to earth. If the user wants to connect
Lexium drives to an IT system, he may:
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use an insulation star transformer in order to re-create a local TT or TN system.
This way allows the rest of the wiring to stay an IT system (only warning in
case of the first fault.)
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use a special Residual Current Circuit Breaker (RCCB) that is able to work with
dc and high peak currents. This device detects unbalance of phases with
regard to earth.
Warning: When the first fault occurs, the RCCB has to switch off quickly power
of the drives. Set of the residual current value must be carefully done and must
be started with the lowest available value (for example: 30mA.)
Following equipment of Merlin Gerin can be used:
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Vigirex, model RH328AF (Reference: 50055)
l
One of these magnetic cores:
- model TA, 30mm in internal diameter (Reference: 50437)
- model PA, 50mm in internal diameter (Reference: 50438)
- model IA, 80mm in internal diameter (Reference: 50439)
If the servo amplifiers are used in residential areas, or in business or commercial
premises, then additional filter measures must be implemented by the user.
The Lexium 17D family of servo amplifiers is only intended to drive specific
brushless synchronous servomotors from the Lexium BPH series, with closed-loop
control of torque, speed and/or position. The dielectric withstand voltage of the
motors must be at least as hight as the DC-link voltage of the servo amplifier.
Use only copper wire. Wire size may be determinated from EN 60204 (or table 310-
16 of the NEC 60°C or 75°C column for AWG size).
We only guarantee the conformance of the servo amplifiers with the standards for
industrial areas, if the components (motors, cables, amplifiers etc) are delivered by
Schneider Automation.
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