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UD78
The UD78 is a Servo Large Option Module from Control Techniques' Unidrive series, designed to facilitate high-precision control applications. This unit operates with a range of communication types, including 2-wire and 4-wire serial connections, and offers auxiliary power capabilities at 24 VDC.
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Technical specifications for UD78
| Manufacturer | Control Techniques |
|---|---|
| Product Line | Unidrive |
| Part Number | UD78 |
| Weight | 0.13 lbs (0.06 kg) |
| Module Description | Servo Large Option Module |
| Input Type | Precision Analog Input |
| Communication Type | 2-wire, 4-wire serial |
| Backup Power | Yes |
| Backup Power Supply Voltage | 24 VDC |
| Full-scale Differential Input Voltage | ±9.8V |
| Absolute Max. Differential Input Voltage | ±30.0V |
| Absolute Max. Input Voltage | ±50V relative to 0VD |
| Communication Port | RS485 |
| Open-loop Resolution | 12-bit plus sign |
| Input-filter Time Constant | 10µs |
| Common Mode Rejection Ratio | 95dB |
| Input Resistance | 20kΩ |
| PC Programming Port | RS232 |
| Full-scale Asymmetry | ±0.1% max. |
Control Techniques manufactured the UD78 as a part of the Unidrive series, specifically structured as a Servo Large Option Module. This device incorporates high-level precision with its analog input features, enhancing control in various applications. It employs a 2-wire and 4-wire serial communication type, enabling flexible integration into different systems.
The module includes built-in backup power supply capabilities rated at 24 VDC, ensuring operation even during power interruptions. The full-scale differential input voltage is set to ±9.8V, with an absolute maximum differential voltage of ±30.0V, allowing for significant input variations. Its boundaries include a maximum input voltage of ±50V relative to 0VD, which ensures robust tolerances against potential overvoltage situations.
Communication is managed through an RS485 port for efficient data exchange, while it also provides a dedicated RS232 interface for PC programming purposes. The device features open-loop resolution measured at 12-bit plus sign, enabling precise control.
Additional specifications include an input-filter time constant of 10 microseconds, ensuring rapid response times, and an impressive common-mode rejection ratio of 95 dB, which minimizes noise and enhances signal integrity. The input resistance is rated at 20 kΩ, supporting a wide range of operating conditions. Furthermore, it maintains full-scale asymmetry within ±0.1% maximum, which is crucial for accuracy in control applications.
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