GE IC800SSI420RP2-DE S2K Series Standalone Motion Controller

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)

Note: A shielded motor power cable is required in CE marked systems.

When used, the  power cable shield should connect to the frame ground stud on the bottom of the 

controller and to the connector at the motor end. 

GE Fanuc’s standard motor power  cables do not include a shield.  

MTR-Series Servo Motor Power and Brake Wiring and Grounding

Motor power and brake cables as shown in Table 3-15 are available from GE Fanuc for the

S2K Series Servo Controllers. MTR-3T series motors with brakes include two additional

leads for connection of a 24Vdc brake power supply (see section 2.1.9, Servo Motor

Specifications, for brake power requirements) and brake control logic into the motor power

cable. MTR-3N and MTR-3S series motors with brakes use a physically separate brake

power cable and connector. The brakes are of a fail-safe design, engaged by internal

springs and disengaged by the application of 24 Vdc power.

The motor cable must have a motor ground wire that connects one of the frame ground

terminals on the controller to the frame ground pin on the motor connector.

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.

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