16
DN1611-1809
Connecting the
KT-NCC to
Controllers
Loops (cont’d)
Figure 5: RS-232 Connection
Connecting the
Relays
The KT-NCC comes with four onboard relays located below the RS-485 terminals (COM 1 and COM 2).
These relays activate under conditions chosen in EntraPass Global Edition software. By default, on-
board relay #2 is configured to monitor AC power failure. (Configuration is done in the Gateway dialog in
EntraPass.)
For the KT-NCC UL Cabinet only
- In order for the KT-NCC to comply with UL 294 section 32.1.5, the
installation technician has the responsibility of installing an AC powered LED outside the KT-NCC cabinet
and connect it to relay # 2 on the KT-NCC PCB. The LED must be visible at all time.
Figure 6: Onboard Relays
CON1
RS-232
RS232-TX
RS232-RX
COM2-TX
COM2-RX
COM1-TX
COM1-RX
RELAY1
RELAY2
RELAY3
RELAY4
RS-232 EXPANSION BUS
WHITE
BLUE
WHITE
ORANGE
VC-485 CONVERTER
KT-NCC
+
-
12V AUX
FLAT CABLE
NON REVERTED
VITAL
RS-232
J1&J2=ON, J3=ON, J4=OFF
JUMPERS SHOULD BE:
AC
PWR
6 CONDUCTOR
COM3
TO CONTROLLERS
RECEIVE
J2
J4
J3
J1
X+
RS-232
V+
TRANSMIT
PWR
GND
RS-232
RJ12
GND
X-
ON
OFF
RS-232/RS-485 CONVERTER
PWR
RT
S
BIAS
EOL
VC-485
Relay #2
