# Stagehand Pro 4: Motor and Brake Output

![](https://3040525219-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2F-MhFI6SSKpm8M7EkrYqp%2Fuploads%2Fgit-blob-04aa01ee3d724bddb83bf1c2c06291cfd43866d4%2Fmotor%20output.png?alt=media)

The **Motor / Brake** output receptacle combines power for a motor and two brakes into a single, 12-pin connector.

{% hint style="info" %}
The receptacle has a current rating high enough for 5hp, 10hp, and 20hp machines. However, output capacity is limited by the Variable Frequency Drive (VFD) inside each model of Stagehand Pro.
{% endhint %}

## Motor Output

The motor output is intended for connection to a **3-phase**, **inverter-duty**, **induction motor**. The attached motor should be wired for **230VAC** power, and suitable for variable frequency from **0.5Hz-60Hz**.

| Pin # | Purpose  |
| :---: | -------- |
|   1   | Motor U  |
|   2   | Motor V  |
|   3   | Motor W  |
|   4   | Not used |

## Motor Brake Output

The **Motor Brake** power circuit is 208/230VAC 1P with a fixed frequency that matches the input power source (*typically 60Hz in the United States and 50Hz abroad*).

The **Motor Brake** power circuit is energized \~60ms prior to motion. It should be used to release a quick-acting mechanical brake *(typically on the high-speed side of a powertrain)*. Power is applied during motion and removed when motion stops. The mechanical brake should be a spring-set safety brake that will hold the load when power is removed.

In addition to the power circuit (pins 5 & 6), there is a potential-free / dry-contact circuit that is switched on pins 7 & 8. During motion, there is continuity between pins 7 & 8. When motion stops, the circuit is opened between pins 7 & 8. This circuit can be used to interrupt the DC power on some safety brakes to decrease stopping time and is referred to as the **Fast Switch Loop**.

{% hint style="info" %}
Not all brakes support the fast-brake switching circuit on pins 7 & 8, and not all scenarios require it. This is an optional connection.
{% endhint %}

| Pin # | Purpose                            |
| :---: | ---------------------------------- |
|   5   | Motor Brake L1 - 208/230VAC 6A Max |
|   6   | Motor Brake L2 - 208/230VAC 6A Max |
|   7   | Motor Brake - Fast Switch Loop     |
|   8   | Motor Brake - Fast Switch Loop     |

## Load Brake Output

The **Load Brake** power circuit is 208/230VAC 1P with a fixed frequency that matches the input power source (*typically 60Hz in the United States and 50Hz abroad*).

The **Load Brake** power circuit is energized \~500ms prior to motion. It should be used to release a slow-acting mechanical brake *(typically on the low-speed side of a powertrain)*. Power is applied during motion and removed when motion stops. The mechanical brake should be a spring-set safety brake that will hold the load when power is removed.

In addition to the power circuit (pins 9 & 10), there is a potential-free / dry-contact circuit that is switched on pins 11 & 12. During motion, there is continuity between pins 11 & 12. When motion stops, the circuit is opened between pins 11 & 12. This circuit can be used to interrupt the DC power on some safety brakes to decrease stopping time and is referred to as the **Fast Switch Loop**.

{% hint style="info" %}
Not all brakes support the fast-brake switching circuit on pins 11 & 12, and not all scenarios require it. This is an optional connection.
{% endhint %}

| Pin # | Purpose                           |
| :---: | --------------------------------- |
|   9   | Load Brake L1 - 208/230VAC 6A Max |
|   10  | Load Brake L2 - 208/230VAC 6A Max |
|   11  | Load Brake - Fast Switch Loop     |
|   12  | Load Brake - Fast Switch Loop     |

{% hint style="danger" %}
The 6A Max current rating for the **Motor Brake** and **Load Brake** outputs is a combined rating. The power for both brake circuits runs through a single 6A circuit breaker on the front panel of the Stagehand Pro 4.
{% endhint %}