Control Techniques DIN1220025A, Руководство пользователя

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Dinverter A User Guide
Issue code: d2au9
46
The Drive is configured for the signal connections shown in Figure 4–11.
Terminals C4 and C5 can alternatively be configured for connection to a
remote speed-reference current-signal (0 to 20mA, etc). See the
descriptions which follow for terminals C4 and C5.
The functions of the two analog inputs are selected by the user using two
parameters as shown in Table 4–5. Make a note of the parameter settings
for the required functions.
Table 4–5 Parameters that control the functions of the analog inputs
Analog input 1
(A2)
Analog input 2
(C4 ~ C5)
Parameter 0.25 Parameter
0.05
Local/Remote
switch
Speed reference
(local) Serial
communications ANS (ANSI comms.) 0 Open
Speed reference
(local) Speed reference
(remote) 0.20 (0 ~ 20mA)
4.20 (4 ~ 20mA)
20.0 (20mA ~ 0)
20.4 (20 ~ 4mA) 2 Open/closed
Not used
(Keypad mode) Serial
communications ANS (ANSI comms.) 4 Not used
Note
Since the Drive operates in open-loop control, the speed
reference cannot give precise control of the motor speed.
Descriptions of the signal connections
A1 A1 0V common
A2 A2 Analog input 1
Function Local speed-reference
Type of input Single-ended
Voltage range (programmable) 0 to +10V
Absolute maximum voltage range –50V to +50V relative to 0V common
Input resistance 94k
Ω
Resolution 10-bit + polarity sign
Absolute accuracy
±
200mV
Sampling period 16ms (60Hz)