IPS - Integrated Pumping Systems with Variable Frequency Drives

Armstrong’s Integrated Pumping System (IPS) automatically ensures delivery of required pumping capacity to match key building loads, while maintaining pumping energy costs at a minimum.

With the use of system load detectors, such as differential pressure sensors, at one or more remote load locations, the Armstrong IPS automatically and continuously provides just the required flow for the current needs.

HVAC system load requirements vary considerably during a typical day. Considerable energy savings result when pumping capacity is continuously matched to the load.

Pumps may be operated as 100% standby or in a multiple pump, staged parallel sequence.

Armstrong’s IPS can control as many as six (6) pumps in parallel, with up to eighteen (18) remote system load sensors.

Dedicated or shared Variable Frequency Drives (VFDs) may be used, with or without power bypass systems.

ARMSTRONG offers the most advanced IPS available, with the flexibility to meet the most demanding pumping applications.

Start-up data entries shall include motor nameplate power, speed, voltage, frequency and current. A motor parameter ID function shall automatically define the motor equivalent circuit used by the torque controller.

A PID speed loop regulator shall be provided with an auto-tune function as well as manual adjustments.

A selection of two (2) commissioning application macros: PFC and Hand \ Auto, shall be provided with preprogrammed parameters to minimize setup time during commissioning.

Start \ Stop control functions shall include 2 or 3-wire start \ stop, coast \ ramp stop sections, flux braking and optional dynamic braking. An automatic reset function shall execute up to 5 attempts to restart after individually selected over current, over voltage, under voltage and signal loss fault conditions. The automatic reset trial and delay times shall be individually adjustable.

Accel \ Decel control functions shall include two (2) sets of ramp time adjustments with linear and three (3) S-curve ramp selections.

Speed control functions shall include: 1. Adjustable min \ max speed (frequency limits in scalar mode). 2. Selection of up to 3 preset speed settings or external speed control. 3. Two (2) sets of critical speed lockout adjustments.

Current and torque limit adjustments to limit the maximum VFD output current and the maximum torque produced by the motor. These limits shall govern the inner loop torque regulator to provide tight conformance with the limits with minimum overshoot.

ADDITIONAL INFO AT http://www.armstrongpumps.com