Connecting ACS stepper driver with Newport MFN stepper motor

Table 4.4 lists pinouts of Newport MFN stepper motor, and corresponding pins of motor and encoder connectors on the back on ACS crate.

Table 4.4: Connections for the Newport MFN stepper motors (used for ZSTG) to to the ACS SPR-9 back panel connectors. These connections are made by the ``ACS rewiring box.'' Power for encoder that has to be connected to pins 21 and 22 has to brought through connector J20 as explained in Sec. 4.3. Fig. 4.2 shows limit switches connection for solid state type limits. The Newport MFN 25 pin connector is described on p. 8.13 (Appendix B) of the Newport MM-3000 manual. The ACS connections are described on pages 9 and 10 of the ACS Step-Pak manual.

Newport MFN stepper 25 pin		ACS SPR-9 equipment rack
pin		J11-J18 motor connectors	DB9 encoder connectors
1	Phase 1a	A (Motor phase 1)
2	(Phase 1a duplicate)
3	Phase 1b	E (Motor phase 1 return)
4	(Phase 1b duplicate)
5	Phase 2a	C (Motor phase 3)
6	(Phase 2a duplicate)
7	Phase 2b	H (Motor phase 3 return)
8	(Phase 2b duplicate)
9	NC
10	NC
11	NC
12	NC
13	Home switch	N (motor home)
14	Shield Ground
15	Encoder index I	connected to pin 21
16	Limit ground	T, U (limit return) plus R (return from limit supply voltage)
17	Limit +	W (Limit +)
18	Limit -	X (Limit -)
19	Encoder quadrature A		Pin 2 (PHA +)
20	Encoder quadrature B		Pin 3 (PHB +)
21	Encoder Power: +5V		Pin 4 (+V)
22	0V Encoder		Pin 9 (+V return GND)
23	Encoder quadrature /A		Pin 7 (PHA -)
24	Encoder quadrature /B		Pin 8 (PHB -)
25	Encoder index /I	connected to pin 22

The connection of solid state type limit switches is displayed on Fig. 4.2. To provide power on pins V and R, DC power has to brought in connector J9 as explained in Sec. 4.3.