Back to top

WKS or DIGIFAS to SERVOSTAR

Valid for S300, S400, S600, S700

General

Hints for substitution of old transistor inverters with the actual servo amplifiers (Sxyz). Considered are obsolete products of the manufacturer SEIDEL (Seidel Servo Drives, Kollmorgen Seidel) called (60WKS, 64WKS, 65WKS, 66WKS, 67WKS, DIGIFAS).

  • All obsolete devices of SEIDEL can be substituted by S300/S400/S600/S700 amplifiers.
  • Mixed systems with obsolete and new devices should be avoided. DC bus coupling of obsolete and new devices is not possible!
  • Less space requirement, simple cabling by pre-configurated power and feedback cables, higher precision of positioning and better performance are good reasons for substitution.
  • Simple handling with Setup Software (for Windows Operating System) or via a standard RS232 terminal program.
  • Some WKS applications used the internal  ± 15V voltage for supplying the inputs (Enable, limit switches etc.). This can be done now with 24V.
  • If the internal  ± 15V voltage has been used for analog setpoint, now an external voltage converter 24V => ±12V / ±15V must be used now.

Compatibility

WKS => S300...S700

If 60WKS and 64 WKS shall be substituted by Sxyz, then all components (transformer, motor and cables) must be substituted.

If 65 WKS and 66WKS shall be substituted by Sxyz, then all components can remain. Motor power and feedback cables must be shielded for error free operation. Motor power connector at the amplifier's end must be replaced by the required shielded one for Sxyz.

Digifas => S300...S700

If Digifas shall be substituted by Sxyz, then all components can remain. Motor power connector at the amplifier's end must be replaced by the required shielded one for Sxyz.

Foot print, wiring and controlling

WKS < 6A => S300

Drives with 60WKS up to 6A and with 67WKS inverters can be substituted with S300 servo amplifiers.

Footprint is smaller and wiring apply is less. All command and setpoint wires can remain. With analog setpoint a shielded setpoint wire should be used. The mains transformer is inapplicable.

WKS > 6A => S400 / S600

Drives with 60WKS from 6A can be substituted by S600 or S400 (!! less I/O ports !!).

Footprint is smaller and wiring apply is less. All command and setpoint wires can remain. With analog setpoint a shielded setpoint wire should be used. The mains transformer is inapplicable.

Digifas => S300...S700

Digifas 7200 can be substituted by S300 (less space required). Command wiring is similar (may be identical). The I/O functions can be set with the setup software.

Digifas 7100 can be substituted by S600 (less space required). The I/O functions can be set with the setup software.

Fieldbus Systems

Attention!
CAN and Profibus systems: protocol is compatible in some cases only.