Technical data vacon •
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7
A RS485 Differential receiver/transmitter
Set bus termination with dip switches (see page 48).
Default: but termination disconnected.
B RS485
Relays
Relays with two change-over contact (SPDT) and a PTC thermistor input.
5,5 mm isolation between channels.
Terminal Signal Technical information
21
Relay output 1
*
*
If 230VAC is used as control voltage from the output relays, the control circuitry must be powered with a
separate isolation transformer to limit short circuit current and overvoltage spikes. This is to prevent
welding on the relay contacts. Refer to standard EN 60204-1, section 7.2.9
Switching capacity 24VDC/8A
250VAC/8A
125VDC/0.4A
Min.switching load 5V/10mA
22
23
24
Relay output 2*
Switching capacity 24VDC/8A
250VAC/8A
125VDC/0.4A
Min.switching load 5V/10mA
25
26
28
Thermistor input
Rtrip = 4.7 kΩ (PTC); Measuring voltage 3.5V
29
Table 31. Technical information on Relay and thermistor terminals.
Standard I/O
Terminal Signal Technical information
Table 30. Technical information on standard I/O terminals.