6 System integration
Operating manual mzr-2521 and mzr-2921
40
Technical data subject to change without prior notice!
Last update: June 2019
LED
Meaning
green
Voltage supply to the control unit is correct, no error
blinking red
Current limitation or blockage of the motor
blinking green and red Too high speed divergence, pump blockage or encoder error
table 23
LED for operating status
Startup of the micro annular gear pump
Voltage supply
K1
K2
Supply voltage
+
–
10...30 VDC
2
4
V
DC
G
ND
5 V
_
o
ut
A
n_
in
SG
N
D
E
rro
r
E
nc
_
ou
t
E
na
bl
e
L /
R
!
Pay attention to the correct polarity of the voltage supply, otherwise
electronics will be damaged.
The length of voltage supply cable should not exceed 10 m, or the
control unit could be damaged by inductance overvoltage.
Analog nominal signal
Potentiometer operating mode
0 … 10 V operating mode
4 … 20 mA operating mode
connected with two jumper pins P1 and P2 connected with the jumper pins P3 and P4 connected with the jumper pins P5-P6 and
P7-P8
10 k
Ω
K3
K4
K5
2
4
V
DC
G
ND
5 V
_
o
ut
A
n_
in
SG
N
D
E
rro
r
E
nc
_
ou
t
E
na
bl
e
L /
R
P1
K4
K5
Command value 0...10 V
2
4
V
DC
G
ND
5 V
_
o
ut
A
n_
in
SG
N
D
E
rro
r
E
nc
_
ou
t
E
na
bl
e
L /
R
+
–
P1
K4
K5
Command value 4...20 mA
+
–
2
4
V
DC
G
ND
5 V
_
o
ut
A
n_
in
SG
N
D
E
rro
r
E
nc
_
ou
t
E
na
bl
e
L /
R
P1
Digital inputs
Enable-Input
Sense of rotation input
−
not connected input or low voltage level
(0 … 0.5 V): Activated motor control
−
High voltage level (4 … 24 VDC):
Deactivated motor control
−
not connected input or low voltage level
(0 … 0.5 V): Motor turns clockwise
(to the right)
−
High voltage level (4 … 24 VDC):
Motor turns anti-clockwise (to the left)
K9
4...24 VDC
2
4
V
DC
G
ND
5 V
_
o
ut
A
n_
in
SG
N
D
E
rro
r
E
nc
_
ou
t
E
na
bl
e
L /
R
K8
4...24 VDC
2
4
V
DC
G
ND
5 V
_
o
ut
A
n_
in
SG
N
D
E
rro
r
E
nc
_
ou
t
E
na
bl
e
L /
R
