6 System integration
Operating manual mzr-2521 and mzr-2921
Last update: June 2019
Technical data subject to change without prior notice!
35
6.6
Operation with the S-KD control unit (optional)
The micro annular gear pumps mzr-2521 and mzr-2921 may optionally be
delivered with the S-KD control unit. The speed for constant flow rates may be
adjusted with a 4-Q servoamplifier. The delivery comprises also a PCB for
connection of the motor cable.
S-KD control unit
Nominal voltage
U
24
V
Power supply
U
B
12 - 30
V
Residual ripple
≤
3 %
Max. output current
I
max
230*)
mA
Max. output power
P
max
50
W
Speed range
n
200...6000*)
rpm
Nominal value input »Set Value«
±
10 or
±
3.9 configurable
V
Status signal »Ready«
Open collector max. U
B
/ 20 mA
no error: »Ready« = high impedance
Ready »Ready« = GND
Connection of »Disable«
Connection of »Disable«
Measurements
approx. 114 x 100 x 34
mm
Weight
approx. 370
g
Working temperature range
0 … +45
°C
*) Values limited in the control unit with the potentiometer
table 16
Technical data of the S-KD control unit
The control unit enables an easy startup of the pump with:
−
the connection board for 10-pole plug of the motor cable
−
the possibility to connect the voltage supply to the screw clamps
−
the analog voltage signal to the screw clamps for speed set
Startup of the micro annular gear pump
external voltage
24 VDC / 2 A
S
D
pump
adapter board
+
-
figure 24
Connection of the micro annular gear pump mzr-2521 and mzr-2921 to the S-KD control unit