| 1 | RUN / STOP |
| 2 | CIRCUIT COMMON |
| 5A | 0-10 VDC SPEED REFERENCE INPUT |
| 5B | 4-20 mA SPEED REFERENCE INPUT |
| 6 | 10 VDC SUPPLY FOR SPEED POT |
| 10A | 0-10 OR 2-10 VDC OUTPUT: FREQUENCY |
| 10B | 0-10 OR 2-10 VDC OUTPUT: LOAD |
| 2 | CIRCUIT COMMON |
| 12A | AUTO MODE SELECT |
| 13A | TB-13A FUNCTION SELECT |
| 13B | TB-13B FUNCTION SELECT |
| 13C | TB-13C FUNCTION SELECT |
| 13D | TB-13D FUNCTION SELECT |
| 14 | OPEN-COLLECTOR OUTPUT |
| 15 | OPEN-COLLECTOR OUTPUT |
| 2 | CIRCUIT COMMON |
| RXA TXB | RS-485 SERIAL COMMUNICATIONS |
