Chapter 3 — Commissioning
Part No. 750-386
3-25
3.15-Pump VFD Control
The ADAC 1000 supports PowerFlex 400, 700, 70, and 753 drives.
Other drives are not recommended.
Pump control with VFD is available on the boiler feed pumps and
on the transfer pumps.
VFD not available for feed pumps on One Pump per Boiler
applications.
Pump Hand mode uses VFD Preset Speed 1 to command pump
frequency.
Preset Speed set at factory to 60Hz (PowerFlex 400, Parameter
A144 Preset Freq 1 = 60.0 Hz).
VFD Interface Signals Required:
• Analog input 4-20mA for speed command
• Discrete input for pump start command
• Discrete output for pump running
• Discrete input for preset speed when pump is in Hand mode
3.15.1 - Pump VFD Control – Manual
When the pump control PID is in Manual, use the Control Output
decrease/increase push buttons to manually adjust the VFD Control
Output%.
Manual push buttons are only visible in Manual mode.
Pump Lead Lag settings are still active even if the Pump VFD
Control is in Manual mode.
VFD minimum Speed is limited on the low end to 6.56ma which
corresponds to 16% VFD output.
Figure 3-21 Pump VFD Control – Manual
Содержание ADAC 1000
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