CSDSC-VFD1 Johnson Controls Current Switch

Overview

The Johnson Controls CSDSC-VFD1 is a Variable Frequency Drive (VFD) auto current switch designed to provide reliable verification of electrical equipment operation. It self-calibrates to automatically set the correct threshold, eliminating false alarms associated with frequency variances and detecting conditions like belt loss or mechanical failure on fans and pumps.

Features

• Self-calibrating functionality for proof of flow without the need for manual sensor calibration
• Split-core design with a flexible iris allows installation without removing the conductor
• Eliminates hazardous live calibration in energized enclosures, increasing safety and reducing labor costs
• Status LED indication to easily check the switch’s on/off status

Specifications

• Amperage Range: 1 A to 135 A
• Output Type: Normally Open (NO)
• Output Rating: 1.0 A at 30 VAC/VDC (24V compatible)
• Frequency Range: Works from a minimum of 10 Hz to 30 Hz depending on current levels
• Aperture Size: 0.75 in. x 0.75 in.

Applications

• Proof of flow and status monitoring for VFD-driven fans, blowers, and pumps
• Detecting motor under-current conditions such as belt loss, coupling shear, and mechanical failures
• Building automation systems requiring nonintrusive current sensing solutions