N-1000-III/IV
6-4
6-4
6-4
6-4
6-4
Section 6: Wiring Requirements
Section 6: Wiring Requirements
Section 6: Wiring Requirements
Section 6: Wiring Requirements
Section 6: Wiring Requirements
Figure 6-3.
Card Reader/Keypad Grounding N-1000-IV.
Card reader/keypad
communication shields should be connected to the panel at wiring block position 5. The shield at
the card reader/keypad end should not be grounded unless the device is electrically floating (not
touching metal).
On the N-1000-IV, card reader/keypad communication shields should be connected
to the panel at the shield position on the Four Card Reader wiring blocks. The
shield at the card reader/keypad end should not be grounded unless the device is
electrically floating (not touching metal). (See Figure 6-3.)
Earth Ground
Shield
GND
+5v
DØ
D1
LED
Shield
GND
+5v
DØ
D1
LED
LED D1 DØ +5v GND Shield LED D1 DØ +5v GND Shield
Status
LED Northern Computers, Inc.
Reader 1
Reader 2
Reader 3
Reader 4
To N-1000
N-1000-IV
On the N-1000-IV Four Reader Board
each wiring terminal block includes a
termination point for the reader's
shield cable drain wire.
Shield
Shield
Shield
Shield
Shield
Shield
no connection
Shield
no connection
no connection
no connection
Shield
Shield