Smart Card - Level-Controlled Pump Activation - Danfoss VLT MCD 600 Operating Manual

Operating Guide | VLT® Soft Starter MCD 600
B Manual stop
K1 Main contactor
START, COM+ Start/stop input
13, 14 Main contactor output
B33, B34 Flow protection
B13, B14 Depth protection
Illustration 37: Application Example, Pump Control and Protection
Parameter settings:
• Parameter 1-1 Command Source: Select Smart Card + Clock.
• Parameters 4-1 to 4-24 Auto-Start/Stop: Set as required.
• Parameter 7-1 Input A Function: Select Command Override: Digital.
• Parameters 30-1 to 30-15 Pump Input Configuration: Set as required.
• Parameter 31-1 to 31-4 Flow Protection: Set as required.
• Parameter 32-1 to 32-6 Pressure Protection: Set as required.
• Parameter 34-1 to 34-4 Depth Protection: Set as required.
• Parameter 35-1 to 35-2 Thermal Protection: Set as required.

11.2 Smart Card - Level-controlled Pump Activation

The VLT® Soft Starter MCD 600 smart card can be used to control start/stop activation of the soft starter, based on information from
external inputs.
In this example, the MCD 600 controls a pump, which fills a tank with maximum and minimum water levels. A pressure sensor is used
to monitor the level of water in the tank. When the water drops below the minimum level, the soft starter triggers the pump to fill the
tank and shuts off the pump when the maximum water level is reached.
A 3-way selector switch allows overriding sensor-based control and manually start and stop the motor.
122 | Danfoss A/S © 2018.10
C Automatic operation (scheduled start/stop)
RESET, COM+ Reset input
DI-A, COM+ Programmable input A (set = Command Override:
Digital)
R1, R2, R3 Motor temperature protection
B23, B24 Pressure protection
Application Examples
AQ262141844215en-000202 / 175R1174