User Manual

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35
APPENDIX C: RELAYS
RELAY USED IN NEDAP READERS
The relays used in the Nedap readers used for RFID applications for libraries are Single Side Stable.
This implies that the switch contacts in the relay remain in a normal or stable position as long as no
power is applied to the coil. There is a normally open (N/O) and a normally closed (N/C) contact.
When power is applied to the coil, the contacts move to a new position, but stay in that position as
long as power is applied to the coil.
RF TEST
With RF Test, the closed time settings can be adjusted to support the hardware connected to the
reader.
CONTACT RATINGS
Load Resistive load ( = 1)
Rated load 0.5 A at 125 VAC; 2 A at 30 VDC
Contact material Ag (Au-clad)
Rated carry current 2 A
Max. switching voltage 250 VAC, 220 DC
Max. switching current 2 A
Max. switching capacity 62.5 VA, 60 W
Min. permissible load 10 µA at 10 mVDC
APPROVED STANDARDS
UL1950 / CSA C22.2 No.950