VACUUBRAND MZ 2 VARIO-SP - Manual (Page 29)

page 29 of 51
Terminal ST1A +UB GND
Supply voltage red blue
Terminal board
(Connection of the control line on the circuit board)
Voltage supply:
UB
+ + + +
V AB
ST1A ST1B
Control signal (setting the motor speed):
Terminal ST1B V+ V- PWM PWM A B
PWM - - white black - -
Voltage 0-10V DC white black - - -
Internal setting of
the motor speed
- - - - -
+ -
External setting of the motor speed via voltage input:
Voltage input: analog 0V .... 10V DC (max. 24V DC !)
➨
Connect the black and the white wire ac-
cordingly to the terminal board ST1B (see
table above).
0V to 10V:
Linear increase of the motor speed (0 rpm (at
0V) to 2400 rpm (at 10V))
Pump will run smoothly only at motor speeds
higher than 400 rpm.
UB
+ + + +
V AB
ST1A ST1B