Keyscan CA250B, Technical Instructions

Page: 67 / 140

Keyscan Inc. – Technical Guide (PC109x - 04.15) 67
Table 7 – CIM Specifications
Operating Voltage
12 VDC
Current Draw
CIM only – 150 mA; CIM and NETCOM2P/6P – 290 mA
Dimensions
4 5/8 " x 3.0 " (11.7 cm x 7.6 cm)
Operating Environment
32° F – 140° F (0° C - 60° C)
Cables
CIM to CIM – CAT 5, 2 twisted pairs - maximum cable distance first CIM to last CIM - 3280
ft (1000 m) @ 9600 bps
CIM to ACU - ribbon cable to communication header H2
CIM 0 to PC direct serial – 5 conductor shielded 22 AWG – maximum 49.2 ft (15 m) @
9600 bps
CIM 0 to NETCOM2P/6P* – plugs directly into CIM, no cable required
* If configuring CIM 0 with a NETCOM2P or NETCOM6P, ensure the NETCOMP version is a
PC1051 or later printed circuit board.
CAN Bus
CAN Bus 1 – PC to ACU communication
CAN Bus 2 – ACU to ACU communication for global functions and CIM to CIM
Topology
Linear (does not support star or ring topologies)
Inter-building Connectivity
Yes
Firmware
Requires control board with EPROM versions 7.40/8.20 or higher
BPS/CAN Bus Distance Chart
Select bit rates based on the cable distance of CAN Bus 1. The PC and ACU bit rates must be the same.
Determine CAN Bus 1 distances before setting baud rate jumpers as outlined under Serial Bit Rate Jumpers J9
– J11.
Table 8 – BPS/CANBUS Distance Chart
PC/ACU Bit Rate CAN Bus 1 / CAT 5 Distance RS-232 Serial Distance
9600 3280 ft (1000 m) 100 ft (30 m)
19,200 3280 ft (1000 m) 49.2 ft (15 m)
57,600 984.25 ft (300 m) 26.2 ft (8 m)
115,200 262.46 ft (80 m) 9.84 ft (3 m)