Dynacord DPA 8150, User Manual

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Bus length (in m) Number of devices on the CAN Bus
32 64 100
100 0.25 mm² or AWG24 0.34 mm² or AWG22 0.34 mm² or AWG22
250 0.34 mm² or AWG22 0.5 mm² or AWG20 0.5 mm² or AWG20
500 0.75 mm² or AWG18 0.75 mm² or AWG18 1.0 mm² or AWG17
Table 6.5: REMOTE CAN BUS cable cross-section
If a participant cannot be directly connected to the CAN bus, a stub line (branch line) must be
used. Since there must always be precisely two terminating resistors on a CAN bus, a stub line
cannot be terminated. This creates reflections, which impair the rest of the bus system. To
minimize these reflections, these stub lines must not exceed a maximum individual length of
2 m at data transmission rates of up to 125 kbit/s, or a maximum length of 0.3 m at higher bit
rates. The overall length of all branch lines must not exceed 30 m.
The following applies:
•
In terms of rack wiring, standard RJ-45 patch cables with 100-ohm impedance (AWG 24/
AWG 26) can be used for short distances (up to 10 m).
• The guidelines specified above for the network cabling must be used when wiring the
racks with each other and for the building installation.
Supply voltage
The DPA output stage is normally operated via the AC mains input (switchable between 115 V
and 230 V). In addition, a battery input is available for emergency power operation (24 V DC).
Mains input with mains fuse
The power supply to the output stage is provided via the mains input using the supplied IEC
cable only. During installation, always disconnect the output stage from all supply voltages.
Connect the output stage only to a suitable power supply that meets the requirements
specified on the type plate. The mains fuse holder is located directly under the mains input,
allowing the fuse to be changed conveniently without having to open the device.
Power supply voltage selector switch
The VOLTAGE SELECTOR switch can be switched between 230 V and 115 V.
Notice!
The device is set to 230 V AC in the factory. For 115 V AC operation, the mains fuse must be
replaced by a slow 10-amp fuse imprinted “T10A”.
6.5
22 en | Safety information PROMATRIX 8000 POWER AMPLIFIER
19-Aug-13 | 03 | F01U217494 User manual