Overview of 17S Internal Electronics, continued

Internal Power The Internal power section of the 17S drive includes the following:

Section

λPower input: A rectifier bridge directly connected to the three-phase earthed supply system, integral power input filter and inrush current limiting circuit.

λMotor power output: PWM current-controlled voltage source IGBT-inverter with isolated current measurement

λRegen circuit: Dynamic distribution of Regen power between several drives on the same DC Link circuit. An internal Regen resistor is standard; optional external Regen resistors are available as required by your application.

λDC Link voltage: 300...700 Vdc, nominal (900 Vdc, intermittent) and can be operated in parallel.

DC Link

If the servo drive has been stored for longer than one year, then the DC Link

Capacitor

capacitors will have to be reconditionned as follows:

Reconditioning

 

 

 

Step

Action

1Ensure that all electrical connections to the drive are disconnected.

2Provide 230 Vac, single-phase power to connector XOA (terminals L1/L2) on the servo drive for about 30 minutes to recondition the capacitors.

Integrated Safe

The 17S drive ensures safe electrical separation (in accordance with EN 50178)

Electrical

between the power input/motor connections and the signal electronics through the

Separation

use of appropriate insulation-creepage distances and electrical isolation. The drive

 

also provides soft-start characteristics, overvoltage and overtemperature detection,

 

short-circuit protection and input phase-failure monitoring. When using BPH series

 

servo motors in conjunction with Schneider’s pre-assembled cables, the drive also

 

monitors the servo motor for overtemperature.

Keypad

 

The operation of the keypad on the front panel of the 17S drive is described in

 

System Operation. These two keys can be used (as an alternative to using the PC)

 

to enter the SERCOS address for the drive

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Schneider Electric 17S Series manual Section, Integrated Safe, Electrical, Separation, Keypad

17S Series specifications

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