Danfoss VACON 100 FLOW Series Application Manual page 278

VACON® 100 FLOW
Application Guide
A
B
C
Illustration 105: The Priming Pump Function
A Start Command (Main Pump)
B Priming Pump Control (Digital Output Signal)
11.22.3.1 (ID 1677) Priming Function
Location in the menu: P3.21.3.1
Use this parameter to enable the Priming pump function. A priming pump is a smaller pump that primes the inlet of the main pump
to prevent the suction of air. The priming pump function controls a priming pump with a relay output signal.
11.22.3.2 (ID 1678) Priming Time
Location in the menu: P3.21.3.2
Use this parameter to set the time that the priming pump operates before the main pump starts.
11.22.4 Anti-blocking Function
The Anti-blocking function makes the pump not to get blocked if the pump is stopped in the Sleep mode for a long time. The pump
starts at intervals, while it is in the Sleep mode. It is possible to make a configuration of the interval, run-time, and speed for the anti-
blocking.
11.22.4.1 (ID 1696) Anti-blocking Interval
Location in the menu: P3.21.4.1
Use this parameter to set the interval for the Anti-blocking function. This parameter gives the time after which the pump starts at
the specified speed (P3.21.4.3 Anti-blocking Frequency) and for the specified quantity time (P3.21.4.2 Anti-blocking Run-time).
The Anti-blocking function can be used in the Single drive and the Multidrive systems only when the pump is in the sleep mode, or
in the standby mode (Multidrive system).
The Anti-blocking function is enabled when the value of this parameter is more than 0 and disabled when the value is 0.
11.22.4.2 (ID 1697) Anti-blocking Run-time
Location in the menu: P3.21.4.2
Use this parameter to set the time that the pump operates at the set speed when the Antiblocking function is activated.
11.22.4.3 (ID 1504) Anti-blocking Frequency
Location in the menu: P3.21.4.3
Use this parameter to set the frequency reference of the drive that is used when the antiblocking function is activated.
11.22.5 Frost Protection
Use the Frost protection function to protect the pump from frost damages. If the pump is in sleep mode and the temperature that is
measured in the pump goes below the set protection temperature, operate the pump at a constant frequency. Constant frequency
is set in P3.13.10.6 Frost Protection Frequency. To use the function, a temperature transducer, or a temperature sensor must be
installed on the pump covering or on the pipe line near the pump.
278 | Danfoss A/S © 2023.08
D
C Output Frequency (Main Pump)
D Priming Time
AB298035655957en-000201 / DPD01083
Parameter Descriptions