Vacon Plc
Phone: +358-201 2121
Fax:+358-201 212 205
Service: +358-40-8371 150
E-mail: [email protected]
E-mail: [email protected]
Vacon
Page 59
Pump control with autochange
7
I/O-expander with pump and fan control application
The digital inputs and relay outputs of the I/O-expander board has fixed signals according to
figure 6-1 when the pump and fan control application is selected.
Digital inputs are used for interlock inputs and they all or part of them are active if the use of
interlocks is set active with parameter 9.31. Number of auxiliary drives (par, 9.1) defines
how many inputs are active. The controls of auxiliary drives are connected to relay outputs.
If four- or five-pump autochange is in use then the relay outputs of the basic control board
can be used additionally.
Terminal
Signal
Description
201
+10V
ref
Reference output
Voltage for a potentiometer, etc.
202
U
in
+
Analogue input, voltage
Programmable
range 0—10 V DC
(Default: Not in use)
203
GND
I/O ground
Ground for reference and controls
204
I
in
+
Analogue input, current
Programmable
205
I
in
-
range 0—20 mA
(Default: Not in use)
206
+24V
Control voltage output
Voltage for switches, etc. max. 0.1 A
207
GND
I/O ground
Ground for reference and controls
208
CMC
Common for DIC1-DIC7
Connect to GND or + 24 V
209
DIC1
Interlock input,
Contact closed = interlock is active
autochange 1
210
DIC2
Interlock input
Contact closed = interlock is active
autochange 2
211
DIC3
Interlock input,
Contact closed = interlock is active
autochange 3
212
DIC4
Interlock input
Contact closed = interlock is active
autochange 4
213
DIC5
Interlock input,
Contact closed = interlock is active
autochange 5
214
DI6A+
Pulse input A
215
DI6A-
(differential input)
216
DI7B+
Pulse input B
90 degrees phase shift compared
217
DI7B-
(differential input)
to pulse input A
218
DI8Z+
Pulse input C
one pulse per one revolution
219
DI8Z-
(differential input)
220
I
out
+
Analogue output
Range 0—20 mA/R
L
max. 500
Ω
Programmable
221
TI+
Termistor input
222
TI-
223
RO3
Relay output 3
Aux. drive 1 / Autochange 1 control
224
RO3
225
RO4
Relay output 4
Aux. drive 2 / Autochange 2 control
226
RO4
227
RO5
Relay output 5
Aux. drive 3 / Autochange 3 control
228
RO5
Signal from
motor termistors
Figure 7-1 I/O-expander with pump and fan control application