CTB Servo Drives

1. Introduction

MachMotion offers two series the GH single axis and MAS multi axis drives.  The GH can be used as a single axis servo drive and can be connected to a range of PM motors or can be used to drive a AC induction spindle motor.  The MAS come in to versions 3 and 4 axis.

The drives all use EtherCAT for communication from the drive and controller.

Configuring a CTB Spindle:

The CTB drives can be configured to use the encoder on that is built into the motor or a external load encoder for position feedback. The encoder on the motor should always be connected to the drive with connector T5. Every spindle drive is expected to have the correct braking resistor installed.

External Load Encoder

The external encoder must be a 5V TTL quadrature encoder with A,B and marker pulse to be used for orientation of the spindle.  It is very important that the external encoder is mounted 1:1 ratio to the spindle load.

1. Encoder wiring:
   

   Function	Cannon Plug	DB15 Pin Number
   0V	K	4
   5V	H	3
   A	A	2
   /A	N	1
   B	C	7
   /B	R	6
   Z	B	12
   /Z	P	11
   Shield		Shell

2. Encoder parameters:
   

   Parameter	Name	Descriptions	Factory Setting
   C1-03	Position Feedback Source	0: Motor Encoder (T5) 1: External Encoder (T4)	0
   C1-04	Position Operation Source	0: Invalid 1: Motor Encoder (T5) 2: External Encoder (T4)	1
   E1-15	External Encoder Type (T4)	0: Invalid 1: Quadrature	1
   E1-16	External Encoder Pules Count (T4)	0～16348	1024
   E1-17	External Encoder Direction (T4)	0: Clockwise 1: Counterclockwise	0

Brake Resistor

1. Connection of braking resistor
   The P, PB terminals on main circuit block of AC servo driver are for connection with braking resistor.
   Please do not connect braking resistor to other terminals, otherwise, the braking resistor will heat up and
   burn out, or cause damage to the driver. 
   

   

   
   Specification of braking resistor 
   

   BKSC-XXXX GHX	43 P7	45 P5	47 P5	40 11	40 15	40 18	40 22	40 30	40 37	40 45	40 55	40 75	40 90	41 10	41 32	41 60	42 00	42 50	43 15
   Power W	60 0	80 0	10 00	60 0	80 0	10 00	10 00	15 00	20 00	20 00	25 00	25 00	25 00	25 00	20 00	20 00	25 00	25 00	25 00
   Resist ance Ω	50	40	32	50	40	32	32	32	20	20	20	20	20	20	20	20	20	20	20
   Qty.	1	1	1	2	2	2	2	2	2	2	2	3	3	3	4	4	6	6	8

   
   
2. Parameters setting
   Set the following parameters
   

   Parameter	Name	Descriptions	Factory Setting
   P1-01	Buss Over Voltage Alarm	0～10000	800