Overview
The Quicksilver Controls QCI-CLCF-04-R2 is a closed-frame clamp module designed to protect servo controllers and drives from overvoltage transients during motor deceleration and braking. This unit is part of the QCI motion control accessory line and features a built-in 2 Ohm power resistor, eliminating the need for external resistor procurement and installation.
Key Features
- 20A maximum current rating for continuous duty service
- Built-in 2 Ohm power resistor (integrated, unlike QCI-CLCF-04 which requires external resistors)
- DIN rail mountable enclosed housing for clean panel integration
- Operates across +12 to +48 VDC input range for multi-voltage compatibility
- Dual input power connections (Pins 1/2 and 5/6) for flexible wiring
- Compact, sealed design suitable for industrial environments
Technical Specifications
- Voltage Range: +12 to +48 VDC
- Maximum Current: 20A
- Internal Resistor: 2 Ohm (R2 designation)
- Continuous Power Dissipation: 20 watts at 25°C ambient
- Operating Temperature Rise: ~78°C stabilization (1 hour)
- Maximum Operating Temperature: 85°C continuous
- Mounting: DIN rail compatible
- Weight: 0.49 lbs
- Connector Type: DIN-style pin terminals (Pins 1–6)
- Overload Rating: 1.25 Kwatt-second short overload
Typical Applications
- SilverMax 34 frame servo systems requiring regenerative energy absorption
- High-inertial load applications (aggressive deceleration, rapid braking)
- Industrial automation drives subject to overvoltage transients
- Motion control systems with dynamic load reversals
- Equipment requiring continuous duty cycle protection without frequent resistor replacement
Compatibility & Replacements
Compatible With
- Quicksilver SilverMax 34 frame servo motors
- QCI SilverNugget servo controller/driver systems
- QCI SilverMax servo systems (17, 23, 34 frame variants)
- Standard 48V DC industrial automation buses
- Applications requiring 12–48 VDC clamp functionality
Replaces / Drop-In Replacement For
- QCI-CLCF-04 (open design with external resistor requirement) — the QCI-CLCF-04-R2 is the integrated-resistor upgrade
- QCI-CLCF-04-R4 (4 Ohm variant) in 2 Ohm applications
Works With
- Quicksilver Controls SilverMax motion control platform
- SilverNugget N2-IX and N3 servo controller/drivers
- DIN-rail industrial panel architectures
- Standard 24 VDC and 48 VDC industrial power supplies
- Quicksilver encoder feedback and motor interface cables (QCI-EC-SMI series, QCI-34EC-LP series)
