Simplex and Multiplex Pump Control

0.33 hp – 200 hp (0.25 kW – 132 kW) Simplex Pump
0.5 hp – 200 hp (0.37 kW – 132 kW) Multiplex Pump

115 V | 208 - 240 V | 380 - 480 V | 575 V | 690 V

The Control Techniques Unidrive M400 Pumping Solutions are a cost effective and versatile variable speed control system for maintaining energy efficient, constant water pressure in single-phase (0.33 - 50 hp) or 3-phase (0.5 - 200 hp) applications. These single-pump and multi-pump (up to 3 max) configurations utilize the onboard controller on the Unidrive M400 variable frequency AC drive (VFD) for economical and easy to use control.

Based on the highly reliable Unidrive M400 AC drive, these solutions provide programming dedicated to simplex and multiplex pump operation. The AI-CTASP (Simplex Pump) and AI-CTAMP (Multiplex Pump) options include an AI-BACKUP-ADAPTOR with SD memory card pre-loaded with default pump parameters to make application setup easy.

Additionally, an optional HMI (human machine interface) is available that makes setup and diagnostics easy and provides additional features such as remote web access and email alerts.

The Control Techniques’ Unidrive M400 Multiplex Pump solution is an effective and versatile variable speed control system for maintaining constant pressure in a multiple pump configuration for ratings up to 200 hp.

Based on the highly reliable Unidrive M400 AC drive, this solution offers cost effective pump control for up to 3 pumps and includes SI-ETHERNET for inter-drive, EtherNet/IP and Modbus TCP communications. An embedded controller in the drive eliminates the need for an external controller saving cost, space and programming time.

Standard Features
- Dynamic V/Hz Energy Savings Mode
- Built-in energy metering
- Wide power range – 0.5 hp to 200 hp
- Wide input power range: 115 V to 690 V
- Smooth S-ramp speed variation avoids water hammer
- Ethernet (EtherNet/IP and Modbus TCP) communications
- Optional intelligent keypad with user units. Last 10 drive trips logged
Start / Stop and control modes
- Hand/Auto mode (via I/O or HMI CTVUE-306-CTAMP)
- Simplex/Duplex/Triplex pump control
Software operating features
- Pressure PID mode
- Sleep / wake mode
- Start / stop delay
- Configurable pipe fill operation
- Automatic fault reset
- Load transfer between pumps
- Lead/Lag/Alternate pump control
- Network loss detection / dynamic recovery
System protection functions
- Low suction detection / dry well detection
- Shared pressure feedback capacity / redundancy
- Transducer loss detection
- High / low pressure detect
- No flow detection
- Motor overload
- Automatic pump loss detection
Software configuration
- The Unidrive M400 Multiplex Pump parameters can be configured from a PC using Connect software and an optional programming cable (CT-USB-CABLE) and RS485 adaptor (AI-485-ADAPTOR), or via the SI-ETHERNET option module.
Add CTVUE-306A-CTAMP HMI for additional features and benefits
- Easy system setup
- Hand / Auto via HMI (human machine interface)
- System trip log
- Historical flow monitoring
- Current flow monitoring
- Remote web access
- Email alerts
How to order

1. Order any frame size 2 or above Unidrive M400. This includes the pre-programmed Unidrive M400 with multiplex pump software and SI-ETHERNET, for example:

Standard Drive: M400-02400013A10101AB100 (with DB transistor) M400-09402000E10101AN100 (without DB transistor)

Multiplex Pump Drive: M400-02400013A10101K0034 (with DB transistor) M400-09402000E10101K0036 (without DB transistor)

2. Order CI-KEYPAD-LCD for access to drive parameters, status and diagnostics and to load SD card pump files from the AI-BACKUP-ADAPTOR. One keypad is recommended to be order at a minimum.

3. Order AI-CTAMP for pump configuration drive parameters for drives one, two and three. This includes an AI-BACKUP-ADAPTOR and SD card with default pump configuration drive parameters pre-loaded. Only one AI-CTAMP is needed to load drive parameters for a multiplex system.