Inputs and Outputs
The RTS-X series of controllers are equipped with standard inputs and outputs designed to satisfy a wide range of machine configurations and support future expansion.
RTS-2 Motor Connectors
I/O Panel Layout
DB-25 I/O Connector
The DB-25 connector contains the inputs, outputs, and RS-485 communication interface.
| Pin | Name | Description |
|---|---|---|
| 1 | Input 0 | Isolated input 0 |
| 2 | Input 1 | Isolated input 1 |
| 3 | Input 2 | Isolated input 2 |
| 4 | Input 3 | Isolated input 3 |
| 5 | Input 4 | Isolated input 4 |
| 6 | Input 5 | Isolated input 5 |
| 7 | Input 6 | Isolated input 6 |
| 8 | Input 7 | Isolated input 7 |
| 9 | Output 0- | Isolated output 0 negative |
| 10 | Output 0+ | Isolated output 0 positive |
| 11 | Output 1- | Isolated output 1 negative |
| 12 | Output 1+ | Isolated output 1 positive |
| 13 | Isolated Ground | Ground reference for inputs, probe, and PWM |
| 14 | RS-485 Ground | Non-isolated RS-485 ground reference |
| 15 | No connect | Future expansion, do not connect |
| 16 | No connect | Future expansion, do dot connect |
| 17 | OUT3- | Isolated output 3 negative |
| 18 | OUT3+ | Isolated outputs 3 positive |
| 19 | OUT2- | Isolated output 2 negative |
| 20 | OUT2+ | Isolated outputs 2 positive |
| 21 | PWM | Isolated PWM output (5V) |
| 22 | Probe Input | Isolated probe input (switch) |
| 23 | RS-485+ (A) | VFD RS-485 communication interface |
| 24 | RS-485- (B) | VFD RS-485 communication interface |
| 25 | Isolated Ground | Ground reference for inputs, probe, and PWM |
Inputs: General
DO NOT DRIVE INPUTS WITH EXTERNAL VOLTAGES
Inputs are intended to be connected to passive switches. Do not connect voltage sources to the inputs.
Eight digital inputs are available on the DB-25 connector. These inputs are optically isolated and reference to the isolated ground on pins 13 and 25.
The inputs are intended to be connected to switches. Connecting any input to the isolated ground will activate the input.
Outputs: General
OUTPUT MAXIMUM RATING
Outputs are intended for DC low voltage, low current output.
Do not exceed 50VDC/0.1A
Do not connect outputs directly to high voltage, high power loads. An external relay is required.
Four dry contact outputs are available on the DB-25 connector. Each output is an optically-isolated solid state relay and acts as a low-voltage switch.
Each output is rated for switching loads up to 50V (peak) with a maximum current of 100mA.
Refer to this article on how to connect an external relay to control heavy loads such as vacuums or cooling systems.
Outputs: Control
All four outputs can be manually controlled from the software using the I/O controls in the software.
Output 1 can also be controlled by M-code commands M3, M4 and M5 (spindle control) when the spindle is configured for "On/Off" mode. M3 and M4 will activate the output. M5 will deactivate the output.
Output 2 can also be controlled by M-code commands M8 and M9. M8 will activate output 1 and M9 will deactivate output 2.