Remote Can Bus - Dynacord PROMATRIX 8000 Owner's Manual

amplifier as well as the occurrence of fault conditions to
other devices. The following table shows the possible
states of the READY contact:
Switch
Status Description
Setting
Operational (= Power supply is in order, booting has
ready)) completed and no fault conditions have
been detected. The relay has pulled.
Not operational Power is switched off/voltage supply is
interrupted, booting of the DPA power amp-
lifier has not completed yet or a fault condi-
tion has been detected. The relay has
dropped/no power.
Table 2-12: States of the Ready Contact
The illustration shows the power amplifier with the
changeover contact being in the "READY" position. The
fault types for which the changeover contact shall switch
and hence shall signal "not operational" can be configured
in IRIS-Net. When integrating the DPA power amplifier in
an alarm system, it is recommended to use the "not oper-
ational" state (closed-circuit principle).

2.7 REMOTE CAN BUS

This paragraph provides information about the
connection of DPA power amplifiers to the RE-
MOTE CAN BUS and about the correct setting of
the CAN address.
C T T REMOTE CAN BUS
ONNECTION O HE
The DPA power amplifier has two RJ-45 connectors for
connecting to the REMOTE CAN BUS. The connectors are
connected in parallel and serve as input and thru-port for
the remote network. It is possible to use commercially
available RJ-45 network cables for the cabling inside of a
rack shelf. For longer cable length, the CAN guidelines
have to be observed. The CAN bus has to be terminated at
both ends using 120 ohms terminators.
The CAN bus allows using different data rates; wherein the
data rate is inversely proportional to the bus length. Data
rates of up to 500 kbit/s are achievable in smaller net-
works. With larger networks, the data rate needs to be
lowered (as far as down to the minimum data rate of 10
kbit/s).
NOTE: The default setting of the data rate is 10
kbit/s.
The following table explains the relationship between
baud rate and length of the bus or extension of the net-
work. In principle, bus lengths over 1000 meters should
only be realized with repeaters.
Transfer rate (in kbit/s)
500
250
125
62,5
20
10
Table 2-13: Transfer rate and bus length
The pin assignment of the REMOTE CAN BUS interface can
be seen in the following illustrations.
Illustration 2-14: Pin assignment of CAN jack
Illustration 2-15: Pin assignment of CAN plug
Pin Name
2 CAN_GND
4 CAN_H (+)
5 CAN_L (-)
7 MONITOR BUS +
8 MONITOR BUS -
Table 2-16: Overview CAN plug
S CAN A
ETTING THE DDRESS
The network address of the DPA power
amplifier is set using the two address se-
lector switches. The addresses 1 to 250
(01 hex to FA hex) are available in a CAN
network. Addresses have to be entered
as hexadecimal numbers. The LOW selec-
tor switch is for entering the low digit while the HIGH se-
lector switch is used to enter the high digit.
CAUTION: Each address may be present only once in a
system. Otherwise network conflicts may
occur.
DPA 8000
Bus length (in meter)
100
250
500
1000
2500
5000
Colour
T568A T568B
Green Orange
Blue
Blue striped
Brown striped
Brown
DPA 8000 - 11