Pilz PMCtendo DD5 Operating Manual page 29

Function description
Please note the maximum permitted voltages between the external conductors (L1, L2, L3)
and the servo amplifier housing:
}
Periodic overvoltages between the external conductors and the housing: Max. 1000 V
(amplitude)
}
Voltage spikes (< 50 μs) in accordance with EN 61800 between the external conduct-
ors: max. 1000 V
}
Voltage spikes (< 50 μs) between the external conductors and housing: max. 2000 V
Direct connection to PMCtendo DD5
}
110 – 230 V mains supplies without earthed star point (asymmetrically earthed or un-
earthed mains supplies), see Fig. (1) – (5)
}
400 – 480 V mains supplies with earthed star point, see Figure (6)
Connection via isolating transformer
}
400 – 480 V mains supplies without earthed star point (asymmetrically earthed or un-
earthed mains supplies), see Fig. (7) – (11)
Requirements for isolating transformers
} An earthed star point must be available on the secondary side. The star point on the
secondary side must be earthed and must be connected to the servo amplifier's protect-
ive earth conductor. This will prevent overvoltages between the external conductors
and the servo amplifier housing.
} The isolating transformers must have the relevant input and output voltages.
Operating Manual PMCtendo DD5
1002236-EN-04
29