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NSD Mat Controllers

System Overview
The NSD Safety Mat System safety relay controllers contain two independent control circuits which allow for shut down due to any single failure in one of the control circuits. The N.O. output circuit is controlled by two captive contact relays in series which are both monitored. If the contact in one relay should stick closed (i.e., contact weld), the other relay will shut down and the LED will indicate the fault; if the contact on the bad relay opens back up, you must reset the power to clear the fault. This relay contact monitoring provides a high degree of user safety.

NSD Safety Mat Controllers

Circuit Description
A low voltage (24VAC or 24VDC) signal is sent out to the safety mat(s) through two wires. Two special optically-isolated diverse redundant circuits look at the signals coming back from the mat(s) detecting the presence of proper positive and negative voltage (AC) levels and output their signals to redundant missing pulse detectors. If the voltage coming back is too high or low, the missing pulse detectors will drop out and de-energize the relay circuit. If the voltage coming back is not AC (missing either positive or negative peaks), then the signal going to the missing pulse detector will disappear which will, in turn, drop out and de-energize the relay circuit.

Redundant relay position detectors watch for a relay contact stuck in the wrong position. The circuits will lock out the reset feature of the NSD control unit if a relay contact is closed when it should be open.

Each relay has its own driver circuit to complete the redundancy of the circuits.

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Controller Dimensions

Metal Box Controller
Board Only: Model NSD-TR-BO - 5" (127mm) x 7: (178mm) plate with 4 holes 4.25" (108mm) x 6.25" (159mm) on center

Controller:
Model NSD-TR-01 = 1 Zone - 8" (203mm) x 6" (152mm) x 3.5" (89mm) with 4" (102mm) x 8.75" (222mm) holes
Model NSD-TR-02 = 2 Zones - 12" (305mm) x 10" (254mm) x 5" (127mm) with 8" (203mm) x 12.75" (324mm) holes
Model NSD-TR-03 & TR-04 = 3 & 4 Zones - 16" (406mm) x 14" (356mm) x 6" (152mm) with 13" (330mm) x 16.75" (425mm) holes

DIN-rail Controller -- Model NSD-DR-01
5.87" (149mm) length x 4.33" (110mm) width x 2.95" (75mm) height

DIN-rail Controller with Diagnostics -- Model NSD-DR-04
5.87" (149mm) length x 4.33" (110mm) width x 2.95" (75mm) height.

DIN-rail enclosure mounting: 35mm DIN-rail mountable or mounting screws on corners of enclosure requiring two combo-head screws (3.5mm x 0.6mm x 14mm or #6 x.5)

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Specifications

Controller:	Model NSD-TR-01 Metal Box Controller	Model NSD-DR-01 DIN-rail Controller	Model NSD-DR-04 DIN-rail Controller (with Diagnostic Message Display)
Enclosure:	NEMA 12, 13, IP 54	NEMA 1, IP 32	NEMA 1, IP 32
Input Power:	120VAC +/- 10% @ 3 watts	24VDC +/- 20% @ 7 watts	24VDC +/- 20% @ 7 watts
Category/Type:	4	4	4
Relay Style:	Monitored force-guided captive contact safety relays	Monitored force-guided captive contact safety relays	Monitored force-guided captive contact safety relays
Relay Configuration:	2 N.O. Safety Relays (closed when circuit activated) 1 Aux. Output N.O. or N.C.	2 N.O. Safety Relays (closed when circuit activated) 1 Aux. Output N.O. or N.C.	2 N.O. Safety Relays (closed when circuit activated) 1 Aux. Output N.O. or N.C. 1 Fault Relay N.O.
Safety Relay rating:	4A @ 220VAC	4A @ 220VAC	4A @ 220VAC
Reset Provisions:	Manual or Automatic	Manual or Automatic	Manual or Automatic
Controller Response Time:	15 ms	19 ms	19 ms per mat input used
Self-Checking Intervals:	Every 20 ms	Every 20 ms	Every 20 ms
Number of Isolated Zones:	1 to 13 (customer specified)	1 per controller	1 per controller
Maximum Number of Mats:	20 with daisy chain wiring	20 with daisy chain wiring	4 with homerun wiring 20 with daisy chain wiring
External Reset Provision:	Green push button	Green push button	Green push button
Indicators :
Internal (on board):	Yellow LED = +5VDC power supply Red LED = Normally dim, brighter when mat is stepped on. Cut wire detected when not lit. Green LED = Relay contact detected closed when it should have been open when not lit. Must reset power to clear.	Green LED(s) = next to each relay (3) Red LED = +12V Yellow LED = +5V Green LED = -5V	Red LED = +12VDC Green LED = +2-VDC Yellow LED = +5VDC Green LEDs = one for each relay (4 total)
External :	Red LED = 1or both relays are de-energized	Red LED = 1 or both relays are de-energized Green LED = All relays are energized Yellow LEDs = 2 to show on/off mat Green LED = Relay fault if it turns off.	Red LED = 1 or both relays are de-energized. Green LED = All relays are energized. Yellow LEDs = 1 for each mat status (4 total)
Diagnostic Message Display:	N/A	N/A	Built-in diagnostic message display
DeviceNet™:	N/A	N/A	Add suffix DN to Model #
Warranty :	2 years	2 years	2 years

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◦	Model SS Solid State Outputs Safety Light Curtain
◦	Model SS Product Overview
◦	Model SS Blanking Options
◦	Model SS Safety Relay
◦	Model SS Specs and Dimensions
◦	Model SS Ordering Procedure
◦	Model SS Accessories
◦	Model MG Metal Box Controller and Safety Light Curtain
◦	Model MG Product Overview
◦	Model MG Smart Controller
◦	Model MG Design Criteria
◦	Model MG Features
◦	Model MG Dimensions
◦	Model MG Blanking Options
◦	Model MG Ordering Procedure
◦	Model MG Accessories
◦	Model MG Ethernet Option
◦	Model DR DIN-rail Controller and Safety Light Curtain
◦	Model DR Product Overview
◦	Model DR Smart Controller
◦	Model DR Design Criteria
◦	Model DR Features
◦	Model DR Dimensions
◦	Model DR Blanking Options
◦	Model DR Ordering Procedure
◦	Model DR Accessories
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◦	Model CE Product Overview
◦	Model CE Blanking Options
◦	Model CE Safety Relay
◦	Model CE Specs and Dimensions
◦	Model CE Ordering Procedure
◦	Model CE Accessories
◦	Model CA Cascading Safety Light Curtain
◦	Model CA Product Overview
◦	Model CA Blanking Options
◦	Model CA Safety Relay
◦	Model CA Specs and Dimensions
◦	Model CA Ordering/Pricing Procedure
◦	Model CA Accessories
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◦	Model PPG Product Overview
◦	Model PPG Dimensions
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◦	UltraTouch Product Overview
◦	What can UltraTouch do for you?
◦	UltraTouch Benefits
◦	Ergonomic Palm Button Comparison
◦	UltraTouch Specifications
◦	UltraTouch Dimensions
◦	UltraTouch Models Available
◦	UltraTouch Ordering Procedure and Finding a Part Number
◦	UltraTouch Accessories

Programmable Safety Controller

Safety Interlock Switches

◦	GKM Series
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Fencing

◦	Fencing Overview
◦	Fencing Specifications
◦	Fencing Styles
◦	Complies with Safety Standards
◦	OSHA Table 0-10
◦	Fencing Warranty
◦	Proposal Request

E-Stops & Stack Lights

Metal Stamping / Pressroom Products

◦	Press Control Design Criteria
◦	Punch Press Clutch/Brake Controls
◦	Press Automation
◦	Die Protection
◦	Tonnage Monitoring
◦	Programmable Limit Switches
◦	Time-Based Brake Monitors

Safety Glossary

◦	Glossary A-C
◦	Glossary D-F
◦	Glossary G-I
◦	Glossary J-L
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◦	Glossary P-R
◦	Glossary S-U
◦	Glossary V-Z

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Repair of Products

Corporate Profile

Standards and Regulations

◦	1910.211
◦	1910.212
◦	1910.213
◦	1910.216
◦	1910.217
◦	Appendix A
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◦	Appendix C
◦	Appendix D
◦	ISO and IEC Standards
◦	What Does OSHA Do?
◦	ANSI
◦	Domestic and International Standards Organizations
◦	OSHA Concept and Techniques of Machine Guarding

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