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681 | BACnet Snow / Ice Sensor Interface MS/TP | Tekmar

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Tekmar 681 Documents

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Overview

Details for 681

BACnet Snow / Ice Sensor Interface MS/TP

The BACnet Snow/Ice Sensor Interface 681 is designed to measure the presence of snow/ice and interfaces with the Building Automation System (BAS) to operate electric or hydronic snow melting systems. The 681 uses tekmar® sensor technology to automatically detect snow or ice, and upon detection communicates with the BAS through BACnet MS/TP. This operation allows the BAS to automatically turn on/off and provide operational status for a snow melting system. The 681 is suitable for any snow melting commercial application including, hospitals, schools, airports, ski resorts, business entrances, driveways, loading docks, and shopping malls.

Features

Slab target temperature
Automatic snow / ice detection
Supports both in-slab and retrofit aerial sensors
Supports both DIN rail and backplate mount
Error codes
Warm weather shut down
Melt pending
Cold weather cut off
BACnet MSTP communication

Specifications

Item Number	681
Brand	Tekmar
Agency Approvals	FCC Part 15, BTL Listed
Ambient Conditions	Minus 4 to 122 degrees F (-20 to 50 degree C), less than 90 percent RH non-condensing, outdoor use permitted when used in NEMA 3 enclosure
Communications Type	BACnet MSTP
Control Type	Microprocessor control, this is not a safety (limit) control
Dimensions	6.34" (161mm) H x 5.13" (130mm) W x 1.30" (33mm) D
Display	3.5" color touchscreen
Enclosure Material	PC+ABS plastic
Enclosure NEMA Rating	NEMA 1
Power Supply	24 V (ac), 50 and 60 Hz