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.
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.
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)
Specifications
Controller :
Enclosure:
Model
NSD-TR-01
Metal Box Controller
NEMA 12, 13, IP 54
Model
NSD-DR-01
DIN-rail Controller
NEMA 1, IP 32
DIN-rail Controller
(with Diagnostic Message Display)
NEMA 1, IP 32
1 Aux. Output N.O. or N.C.
1 Aux. Output N.O. or N.C.
1 Aux. Output N.O. or N.C.
1 Fault Relay N.O.
20 with daisy chain wiring
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.
Red LED = +12V
Yellow LED = +5V
Green LED = -5V
Green LED = +2-VDC
Yellow LED = +5VDC
Green LEDs = one for each relay (4 total)
Green LED = All relays are energized
Yellow LEDs = 2 to show on/off mat
Green LED = Relay fault if it turns off.
Green LED = All relays are energized.
Yellow LEDs = 1 for each mat status (4 total)
For detailed technical information on the MicroGuard® Safety Light Curtain and other Pinnacle Systems safety products download Installation Manuals.
To speak to a sales representative in the United States, please call (800) 569-7697.
Request a catalog or price quote online or send an e-mail.
