HNP Mikrosysteme mzr-7240, Operating Manual

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6 Optional motor versions Operating manual mzr-7240
34
Technical data subject to change without prior notice! Last update: March 2019
6.5.2.4 Startup with external potentiometer
1. Connect the drive with the eight colored wires to the terminal box S-G05.
The colors of the corresponding wire connections are described in table 24.
2. Bring the internal potentiometer knob to the null position by turning it
clockwise to the limit stop.
3. Put the DIP-switch to »0…10 V« position.
4. Connect an external 0-10 V voltage supply to the terminal clamps
»AnalogIn«, »10 V« and »GND« to the S-G05. (see table 23)
ON
1 2 3 4
ON
1 2 3 4
ON
1 2 3 4
0(4)...20 mA
0...10 V
Poti
Mode
Speed Status
Re a d y : g re e n
Fa u l t: re d
9
D
ig
.
I
n
p
u
t
T
x
D
1
6
1
5
R
xD
1
3
A
n
a
lo
g
G
N
D
F
a
u
lt
O
u
t
1
4
A
n
a
lo
g
I
n
.
1
2
2
4
V
D
C
1
0
1
1
G
N
D
Term inal Box S-G05
HNP M ikrosystem e Gm bH
RS-232 Power In
24 VDC
0
1
2
4
V
D
C
/
4
A
D
ig
.
In
p
u
t
8
7
F
a
u
lt
5
A
n
a
lo
g
I
n
.
G
N
D
6
n
.c
.
4
G
N
D
2
3
1
0
V
o
u
t
ON
1 2 3 4
ON
1 2 3 4
ON
1 2 3 4
0(4)...20 mA
0...10 V
Poti
Mode
Speed Status
Re a d y : g re e n
Fa u l t: re d
D
ig
.
In
p
u
t
1
6
R
x
D
A
n
a
lo
g
G
N
D
1
4
1
2
1
0
G
N
D
Term inal Box S-G05
HNP M ikrosystem e Gm bH
RS-232 Power In
24 VDC
2
4
V
D
C
/
4
A
F
a
u
lt
A
n
a
lo
g
I
n
.
1
0
V
o
u
t
T
x
D
F
a
u
lt
O
u
t
A
n
a
lo
g
I
n
.
2
4
V
D
C
1
5
1
3
1
1
9 1 7 5 3
D
ig
.
In
p
u
t
G
N
D
n
.
c.
G
N
D
2 8 6 4
0
m z r-pum p
J 2
power / s ignal
J 1
10 V
Potentiometer
external
GND
Analog IN
– +
2 1 6 5 3
motor cable
external voltage
24 V DC
serial
interface
of PC
alternative
power supply
24 V DC
figure 22 Startup with an external potentiometer
5. Provide for a steady liquid supply to the pump in order to avoid dry
operation of the device.
6. Connect the 24 VDC voltage supply to the terminal or to the DIN
connector.
Make sure that the polarity of the supplied direct current is correct, otherwise
electronics will be damaged.
The input circuit at the analog input is layed out as a differential amplifier. If
the analog input is “open” there is already a voltage of 2 V. That means in
this case that the motor would be turning at a speed of about 2000 rpm. In
order to set 0 rpm the input must be connected over a low ohm resistor to
the analog ground (AGND) or connected to the AGND-voltage level.