Paxton RS485 protection module - Manual

Ins-30065 - RS485 protection module
Net2 data line protection
Under severe electrical storm conditions, the Net2 ACU's connected to the RS485 data line can be
damaged due to the very high induced voltages that can be present.
The best method of protecting the system is to make use of Fibre Optic or Wireless Networks between
outdoor locations or within large roof spaces. These then communicate with the Net2 PC over a LAN
network using a Paxton TCP/IP converter.
Where this is not practical, the fitting of surge suppressors to limit the voltage passing down the data
cable to 5V DC (RS485 standard) is strongly advised.
17/11/2011
This module is designed to suppress high voltage transients that can damage the communications
circuits of the Net2 ACU through its data line connection.
It makes use of TRANSILTM diodes that have an instantaneous response (less than 10 picoseconds) to
any overvoltage condition and will limit the voltage to a maximum to 5V DC with reference to the 0V
screen. Under extreme conditions, the diode will fail as a short circuit to 0V. The unit will then need to
be replaced before data transmission can be resumed.
Units should be placed at either end of any vulnerable cabling run to isolate the section.
Where to fit the modules
Protection Module
Red 12v dc Br own Orange Gr een Yellow Blue Mauve Black/White Br own Yellow
Reader 1
Orange
Keypad 1
+12v 0v N.C. N.O. Com N.C. N.O. Com
Alarm Output
0v
Contact
0v Exit 0v
Tamper PSU
Rx Tx
Relay 1 Relay 2
Exit Contact Tamper
PSU OK
5v 12v Red Brown
Orange Green
Yellow Blue Mauve
Black/White Brown
Yellow Orange
Reader 2
Keypad 2
Power Relay 1 Relay 2 Inputs
Network CAT5 cable coding
White/Gr
een
Gr een White/Orange Orange 1 2 3 4 Scr een or spar
e cor es
fr om network cable
CAUTION: for 12v d.c. readers only . For correct connection of old 5v r eaders, refer to instructions.
Serial number
241821
Test ID: 012345678901
z-1440
3 2 4 8 9 8 0 0 0 0 0 4
Red 12v dc Br own Orange Gr een Yellow Blue Mauve Black/White Br own Yellow
Reader 1
Orange
Keypad 1
+12v 0v N.C. N.O. Com N.C. N.O. Com
Alarm Output
0v
Contact
0v Exit 0v
Tamper PSU
Rx Tx
Relay 1 Relay 2
Exit Contact Tamper
PSU OK
5v 12v Red Brown
Orange Green
Yellow Blue Mauve
Black/White Brown
Yellow Orange
Reader 2
Keypad 2
Power Relay 1 Relay 2 Inputs
Network CAT5 cable coding
White/Gr
een
Gr een White/Orange Orange 1 2 3 4 Scr een or spar
e cor es
fr om network cable
CAUTION: for 12v d.c. readers only . For correct connection of old 5v r eaders, refer to instructions.
Serial number
241821
Test ID: 012345678901
z-1440
3 2 4 8 9 8 0 0 0 0 0 4
Red 12v dc Br own Orange Gr een Yellow Blue Mauve Black/White Br own Yellow
Reader 1
Orange
Keypad 1
+12v 0v N.C. N.O. Com N.C. N.O. Com
Alarm Output
0v
Contact
0v Exit 0v
Tamper PSU
Rx
Tx Relay 1 Relay 2
Exit Contact
Tamper PSU OK
5v 12v Red Brown Orange
Green Yellow
Blue Mauve
Black/White Brown Yellow Orange
Reader 2
Keypad 2
Power Relay 1 Relay 2 Inputs
Network CAT5 cable coding
White/Gr
een
Gr een White/Orange Orange 1 2 3 4 Scr een or spar
e cor es
fr om network cable
CAUTION: for 12v d.c. readers only . For correct connection of old 5v r eaders, refer to instructions.
Serial number 241821
Test ID: 012345678901
z-1440
3 2 4 8 9 8 0 0 0 0 0 4
Vulnerable Area
Protection Module
Technical Support
Technical help is available: Monday - Friday from 07:00 - 19:00 (GMT)
Saturday from 09:00 - 13:00 (GMT)
01273 811011 [email protected]
Documentation on all Paxton products can be found on our website - http://www.paxton.co.uk/
Paxton