GE IC800SSD107RS1-CB S2K Series Drives

S-Series Servo Motor Encoder Wiring

Position feedback cables as shown in Table 3-15 are available from GE Fanuc for the S2K

Series controllers. Plug the motor end of the encoder cable into the connector on the motor

and the DB-type connector end of the cable into the DB-15 socket labeled Position

Feedback on the front of the controller. The best system reliability is achieved when the

encoder cable is returned in a separate conduit from that housing the motor power cable.

The feedback cable should use 24-28 AWG twisted pair wire and must be shielded. The

shields must be terminated to the isolated ground pins on the Position Feedback (DB-15)

connector on the S2K controller as shown in Table 3-8. Maximum serial encoder cable

length is 15 meters using factory-supplied cables. If two parallel 24 AWG wires are

connected to both the +5v and ground (GND), as shown in Table 3-8, longer cable runs

require the wire gauge to be increased to reduce the signal voltage drop. The S-Series

motors require a 5V ±5% (4.75 to 5.25 VDC) power source for proper operation.

Analog Output (AO)

The hardware analog output is primarily used as a process input to the controller programs,

but it can also be used a diagnostic output for various signals used in the tuning and

debugging process. The Analog Common pin is used for the signal return. The Analog

Output (AO) software parameter allows you to configure this output to represent one of the

following signals:

• Actual velocity (AO = VLA)

• Actual output current (AO = CMD)

• Following error (AO = FE)

Stepper Controller Electrical Specifications

The S2K Stepper Controller (IC800STI105xx) is suitable for use on a circuit capable of

delivering not more than 5,000 rms symmetrical amperes and 130 volts maximum when

protected by RK5 class 15A fuses. Table 2-2 summarizes the Stepper Controllers

maximum continuous input power requirements. The actual input power and current is a

function of the motor's operating point and the duty cycle. 

INDUCTIVE LOAD DRIVER — Bifilar (unipolar) stepper motors can be driven directly. 

The internal kickback diodes prevent damage to the output transistors by suppressing the high-voltage spikes which occur when

turning OFF an inductive load.

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