8 Channel Contact Closure SFP

Transmit 8 Contact Closures Over Fiber

8 Channel Contact Closure SFP System

Overview
Features
Specs
Docs
Diagrams
PN

The system provides transmission of eight (8) independent input signals over fiber optic cable. Applications include alarm event triggering, building automation, environmental control systems, fire & alarm systems, gate control, traffic signal control equipment, and more.

Fiber optic cable is immune to RF noise, high voltages, and extends the signal transmission range up to 100km. A complete system requires two (2) units a 24-48VDC power source on each end, and two (2) matching SFP transceivers.

The Contact Input (TX) is configured with input terminals and the Contact Output (RX) has output relays. Each unit features a NC/NO alarm contact for system monitoring and convenient LED indicators to view system status.

View Our Fiber Optic Converters Beginner’s Guide

Features

Hardened to operate in -40°F to +158°F (-40°C to +70°C)
Compact DIN (T35) rail mount enclosure
Can be powered by 24-56VDC
Redundant power inputs with polarity reversal protection, 1.5kV isolation
SFP transceiver interface
Each output relay is rated for 60 Watts. (Available with NO or NC relays)
Inputs can sense a Dry Contact closure
Inputs can accept a DC voltage signal from 12 – 48 Volts (Custom voltage ranges available)
Each Input is optically isolated, 3.5kV
Both sides include alarm contacts for status monitoring
Convenient LED status indicators
Pluggable terminal blocks
Critical, high voltage, remote or un-manned locations operating 24/7/365
Limited Lifetime Warranty
Made in USA

Please see the product documentation for the complete list of specifications

Fiber Connector Type:
SFP Transceiver

Compatibility:
155Mbps SFP Modules

LED:
PWR, STS, LNK, and Inputs 1~8 (TX) or Outputs 1~8 (RX)

Power Input:
24-48VDC (Polarity Insensitive)
Dual redundant power inputs

Power Consumption:
6 Watts Max

Wire Connectors:
Screw down terminal block, 16-26AWG

Inputs 1-8:
Dry
Wet: 12-24VDC
Wet: 24-48VDC

Outputs 1-8:
Either Normally Open or Normally Closed Relay Contacts

Output Relay Contacts Maximum Rating:
15AC 1.087A 125VA
12VDC 3.000A 36 Watts
24VDC 2.500A 60 Watts
48VDC 1.250A 60 Watts
130VDC 0.462A 60 Watts
250VDC 0.240A 60 Watts

System Alarm Output:
Normally Open / Closed Relay

Relay Response Time:
5ms typical, 10ms maximum

Surge Protection:
Varistors, Automatic resettable fuses

DC Input Isolation:
1.5kV

Construction:
Powder coated steel and aluminum alloy

Mounting Style:
Standard DIN rail (TS-35) mount

Temperature:
-40°C ~ 70°C (-40°F ~ 158°F)

Operating Humidity:
95%

MTBF:
175,000 Hours

Dimensions/Mounting:
H 4.93” x W 2.0” x D 3.93” (not including DIN clip or pluggable connectors)
Standard T-35 DIN rail mounting

General Information

CAD Files

Guide

Fiber Optic Converters: A Beginner’s Guide

8CD-TX-DR-2
8CD-TX-24-2
8CD-TX-48-2
8CD-RX-NO-2
8CD-RX-NC-2
SFP-155-04-2
SFP-155-30-2
SFP-155-31-2
SFP-155-34-2
SFP-155-20-2
SFP-155-21-2
SFP-155-24-2
SFP-155-25-2

$565.00

Lead Time: 1 to 2 Weeks*

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Contact Sales

For product questions, volume pricing and/or delivery outside of the US and Canada, please contact sales.

Ordering

Product configuration	Transmitter/Receiver	Inputs	Input Type	Outputs	Output Type	Part number	Price
1 SFP Slot, 8 Digital Inputs - Dry Contact Sensing, Powering Voltage 24-48 DC	Transmitter	8 Digital Inputs	Dry Contact Sensing	N/A	N/A	8CD-TX-DR-2	$565.00	8 Channel Contact Closure SFP quantity
1 SFP Slot, 8 Digital Inputs - 12-24VDC Sinking, Powering Voltage 24-48 DC	Transmitter	8 Digital Inputs	12~24VDC	N/A	N/A	8CD-TX-24-2	$565.00	8 Channel Contact Closure SFP quantity
1 SFP Slot, 8 Digital Inputs - 24-48VDC Sinking, Powering Voltage 24-48 DC	Transmitter	8 Digital Inputs	24~48VDC	N/A	N/A	8CD-TX-48-2	$565.00	8 Channel Contact Closure SFP quantity
1 SFP Slot, 8 Relay Outputs - Normally Open, Powering Voltage 24-48 DC	Receiver	N/A	N/A	8 Relay Outputs	Normally Open	8CD-RX-NO-2	$565.00	8 Channel Contact Closure SFP quantity
1 SFP Slot, 8 Relay Outputs - Normally Closed, Powering Voltage 24-48 DC	Receiver	N/A	N/A	8 Relay Outputs	Normally Closed	8CD-RX-NC-2	$565.00	8 Channel Contact Closure SFP quantity

A complete system requires one Transmitter and one Receiver
SFP Transceivers are sold separately (see list below)

155M SFP Transceiver

Short description	Mode	Connector	Distance	Fibers	Wavelength	Part number	Price		hf:att:pa_distance	hf:att:pa_fibers
Multimode, LC, 2km/1.2 miles, Dual Fiber, 1310nm	Multimode	LC	2km/1.2 miles	Dual Fiber	1310nm	SFP-155-04-2	$65.00	155M SFP Transceiver quantity	2km-1-2-miles	dual-fiber
Singlemode, LC, 20km/12.4 miles, Dual Fiber, 1310nm	Singlemode	LC	20km/12.4 miles	Dual Fiber	1310nm	SFP-155-30-2	$85.00	155M SFP Transceiver quantity	20km-12-4-miles	dual-fiber
Singlemode, LC, 60km/37 miles, Dual Fiber, 1310nm	Singlemode	LC	60km/37 miles	Dual Fiber	1310nm	SFP-155-31-2	$120.00	155M SFP Transceiver quantity	60km-37-miles	dual-fiber
Singlemode, LC, 100km/62 miles, Dual Fiber, 1550nm	Singlemode	LC	100km/62 miles	Dual Fiber	1550nm	SFP-155-34-2	$280.00	155M SFP Transceiver quantity	100km-62-miles	dual-fiber
Singlemode, LC, 20km/12.4 miles, Single Fiber – Side A, Tx1310/Rx1550	Singlemode	LC	20km/12.4 miles	Single Fiber - Side A	T-1310/R-1550	SFP-155-20-2	$105.00	155M SFP Transceiver quantity	20km-12-4-miles	single-fiber-side-a
Singlemode, LC, 20km/12.4 miles, Single Fiber – Side B, Rx1310/Tx1550	Singlemode	LC	20km/12.4 miles	Single Fiber - Side B	R-1310/T-1550	SFP-155-21-2	$105.00	155M SFP Transceiver quantity	20km-12-4-miles	single-fiber-side-b
Singlemode, LC, 60km/37 miles, Single Fiber – Side A, Tx1310/Rx1550	Singlemode	LC	60km/37 miles	Single Fiber - Side A	T-1310/R-1550	SFP-155-24-2	$140.00	155M SFP Transceiver quantity	60km-37-miles	single-fiber-side-a
Singlemode, LC, 60km/37 miles, Single Fiber – Side B, Rx1310/Tx1550	Singlemode	LC	60km/37 miles	Single Fiber - Side B	R-1310/T-1550	SFP-155-25-2	$170.00	155M SFP Transceiver quantity	60km-37-miles	single-fiber-side-b