NORD Drivesystems BU0510 - Manual (Page 16)

POSICON position control for NORD frequency inverters, SK 530E and above
16 Subject to technical alterations BU 0510 GB-3911
2.2.5 SSI encoders
(SK 540E and above)
SSI encoders whose signals are TTL-compatible according to EIA RS 422 can be used.
The zero point of the absolute encoder is determined by the position of the absolute encoder and should
therefore be adjusted by installation.
The clock frequency is 200kHz. With this clock frequency, cable lengths of up to 80m are possible. The
cables should be twisted in pairs and screened.
The supply voltage for the encoder is 10-30V. The voltage source can be an external source or the internal
voltage (according to the frequency inverter version: 12V /15V /24V).
Function Cable colours for SSI encoders* Assignment for SK 54xE
10-30V supply brown
X5:42( /X5:44 /X6:49)
15V ( /24V /12V)
Sensor U B red
X5:42( /X5:44 /X6:49)
15V ( /24V /12V)
0V supply white X5:40 GND/0V
Sensor 0V blue X5:40 GND/0V
Clock + green X14:63 CLK +
Clock - yellow X14:64 CLK-
Data + (RS485) grey X14:65 DAT +
Data - (RS485) pink X14:66 DAT -
Cable shield connected to a large area of the frequency inverter housing or shielding angle
* E.g. Kübler 3670
Table 7: Connection assignment for SSI encoders