Description
Product Overview
The EDWARD SCU-1600 is a fully digital control unit for STP-series turbomolecular pumps. It converts single-phase AC input power into three-phase DC drive power for the pump motor while managing pump operation, magnetic bearing control, monitoring, and optional Temperature Management System (TMS) functions.
The SCU-1600 is specified for compatible STP turbomolecular pumps in the approximately 2000 to 4500 L/s range. Typical compatible pump families include STP-A2203, A2503, A2803, A3003, A3503, STP-F2203, STP-XA2703, STP-XA3203, STP-XA4503, and STP-XH2603/XH3203.
Technical Specifications
| Parameter | Specification |
|---|---|
| Brand | EDWARD / Edwards |
| Model | SCU-1600 |
| Product Type | Turbo Molecular Pump Control Unit |
| Control Method | Fully digital control |
| Compatible Pump | STP-series turbomolecular pumps |
| Compatible Pump Range | Approx. 2000–4500 L/s |
| Input Voltage | 200–240 VAC ±10% |
| Input Frequency | 50/60 Hz ±2 Hz |
| Power Consumption without TMS | Max. 1600 VA |
| Power Consumption with TMS | Max. 2100 VA |
| Main Breaker Rated Current | 15 A |
| Motor Drive | 3-phase DC |
| Magnetic Bearing Control | Digital |
| TMS | Built-in |
| Serial Communication | RS232 / RS485 |
| Display | LCD |
| Operating Controls | Start, Stop, Reset, Select, Up, Down, Enter, Manual/Remote |
| Allowable Ambient Temperature | 0 to 40°C |
| Weight | Approx. 12 kg |
| Condition | Verify actual unit/listing condition |
The electrical specifications above are documented for the SCU-1600 control unit; the exact pump compatibility should still be checked against the connected STP pump model and unit configuration before installation.
Key Features
- Digital control system for Edwards STP turbomolecular pumps
- Supports magnetic-bearing pump operation
- Built-in Temperature Management System control
- LCD front-panel display
- Manual and remote operating modes
- Standard RS232/RS485 serial communication
- Pump rotor imbalance monitoring
- Backup-bearing damage monitoring
- Pre-maintenance and warning functions
- Compact half-rack controller design
- Suitable for semiconductor and high-vacuum equipment service
The controller can also provide pump operating information such as running status, software/version information, serial number, operating hours, start count, and bearing-related information through its confirmation and communication functions.
Typical Applications
Semiconductor Manufacturing
Used as part of vacuum pumping systems on semiconductor processing equipment, particularly systems using compatible Edwards STP turbomolecular pumps.
High-Vacuum Equipment
Suitable for vacuum chambers and process systems requiring controlled turbomolecular pumping.
Equipment Maintenance
The SCU-1600 can be useful as a replacement or spare controller when an existing STP pump control unit fails or becomes unreliable.
Factory Spare Inventory
For older semiconductor and vacuum systems, keeping a compatible SCU-1600 available can reduce equipment downtime when the original controller requires replacement.
Installation & Configuration
Before installation, confirm the pump model and controller configuration. The SCU-1600 is not a universal controller for every Edwards turbomolecular pump; the pump and controller must be electrically and functionally compatible.
Important checks include:
- Confirm the input voltage shown on the controller rating label.
- Verify the connected STP pump model.
- Inspect the pump-control cable and connectors.
- Check the TMS heater, valve, and sensor connections when TMS is used.
- Verify grounding and insulation before energizing the system.
- Check the Manual/Remote operating configuration.
- Confirm RS232/RS485 communication parameters when connected to external equipment.
- Perform a controlled pump start and monitor the LCD status and warning information.
The SCU-1600 manual specifically cautions that the supply voltage must correspond to the rating label and that pump connectors should not be disconnected while the STP pump is operating.
Inspection & Testing
For a used SCU-1600, a proper incoming inspection should include:
- Model and identification label verification
- Physical enclosure and front-panel inspection
- LCD display check
- Start/Stop/Reset switch inspection
- AC input connector inspection
- Pump output connector inspection
- RS232/RS485 communication interface inspection
- Cooling and ventilation inspection
- Internal/external contamination check
- Grounding and insulation checks
- Functional test with a compatible STP pump where available
A meaningful functional test should verify pump start-up, speed control, operating status, warning functions, remote operation, and communication rather than relying only on a power-on check.
Maintenance Notes
Keep the controller clean and dry and provide adequate ventilation around the enclosure. Do not operate it outside the specified ambient temperature range.
For systems that have been in service for a long period, checking the operating-hour counter, start counter, stored warning/error information, and bearing-related status can provide useful information when evaluating the associated pump system. The SCU-1600 provides functions for reading these operating parameters.
Frequently Asked Questions
Q: What is the EDWARD SCU-1600?
A: It is a digital control unit used to operate compatible STP-series turbomolecular pumps.
Q: Is SCU-1600 a turbomolecular pump itself?
A: No. It is the electronic control unit used to drive and monitor the compatible STP turbomolecular pump.
Q: What input voltage does it use?
A: The documented specification is 200–240 VAC ±10%, 50/60 Hz ±2 Hz.
Q: Does it support RS232 and RS485?
A: Yes. RS232/RS485 serial communication is listed as standard.
Q: Which pumps can be used with the SCU-1600?
A: Compatible families include STP-A2203/A2503/A2803/A3003/A3503, STP-F2203, STP-XA2703/XA3203/XA4503 and STP-XH2603/XH3203. Exact compatibility should be confirmed from the pump nameplate and controller configuration.
Q: Can I replace another Edwards controller directly with an SCU-1600?
A: Not automatically. The replacement must be matched to the STP pump model, wiring, communication configuration, and TMS arrangement.
Related Models
- EDWARDS SCU-1500
- EDWARDS SCU-800
- EDWARDS SCU-750
- EDWARDS STP-A2203
- EDWARDS STP-A2503
- EDWARDS STP-A2803
- EDWARDS STP-A3003
- EDWARDS STP-A3503
- EDWARDS STP-XA3203
- EDWARDS STP-XA4503
These are related Edwards vacuum-system products and pump/controller models; they should not be treated as automatic drop-in replacements for SCU-1600.
Identification & Ordering Notes
When sourcing an SCU-1600, compare the following information with the existing controller:
- Manufacturer marking
- Model: SCU-1600
- Voltage rating label
- Serial number
- Controller revision/version
- Rear-panel connector arrangement
- Pump model
- TMS configuration
- Communication configuration
- Included cables or accessories
For a replacement controller, matching the physical model number alone is not enough. The connected STP pump and system configuration should also be confirmed before installation.
