Danfoss VACON 100 FLOW Series Application Manual page 265

VACON® 100 FLOW
Application Guide
11.17.4.9 (ID 1098) Bandwidth Delay
Location in the menu: P3.15.14
Use this parameter to set the duration before the auxiliary motors start or stop. When the PID feedback is not in the bandwidth area,
the time that is set with this parameter must go before the auxiliary motors start or stop. The number of pumps that operate increa-
ses or decreases, if the PID controller cannot keep the process value (feedback) in the specified bandwidth around the setpoint.
The bandwidth area is specified as a percentage of the PID setpoint. When the PID feedback value stays in the bandwidth area, it is
not necessary to increase or decrease the number of pumps that operate.
When the feedback value goes out of the bandwidth area, the quantity of time specified by parameter P3.15.14 must go before the
number of pumps that operate increases or decreases. More pumps must be available.
P3.15.13
A
1
2
Illustration 98: The Start or Stop of the Auxiliary Pumps (P3.15.13 = Bandwidth, P3.15.14 = Bandwidth delay)
A The pump that controls the system operates at a fre-
quency that is near the maximum (-2 Hz). It increa-
ses the number of pumps that operate.
B The pump that controls the system operates at a fre-
quency that is near the minimum (+2 Hz). It decrea-
ses the number of pumps that operate.
11.17.4.10 (ID 1513) Constant Production Speed
Location in the menu: P3.15.15
Use this parameter to set the constant speed at which the motor locks when the next motor starts in the Multimaster system. The
value of this parameter is given as a percentage of the minimum frequency to the maximum frequency.
11.17.4.11 (ID 1187) Running Pumps Limit
Location in the menu: P3.15.16
Use this parameter to set the maximum number of motors that run at the same time in the Multi-pump system.
If the value of parameter P3.15.2 Number of Pumps changes, the same value changes automatically to this parameter.
Example
The Multi-pump system has 3 pumps, but only 2 pumps can operate at the same time. The third pump is installed in the system for
redundancy. The number of pumps that can operate at the same time:
• Running Pump Limit = 2
11.17.4.12 (ID 426) Pump 1 Interlock
Location in the menu: P3.15.17.1
Use this parameter to select the digital input signal that is used as interlock signal for the multi-pump system.
Danfoss A/S © 2023.08
P3.15.14
C
C
D
P3.15.14
D
The number pumps that operate increases or de-
creases, if the PID controller cannot keep the proc-
ess value feedback in the specified bandwidth
around the setpoint.
The specified bandwidth around the setpoint.
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Parameter Descriptions
B