Lenze-ACTech MCH Series
NEMA 1, NEMA 4 & NEMA 12 Models for HVAC Applications

>  Digital Inputs (Active low, NPN)

1 Dedicated Stop
4 Programmable

>  Digital Outputs:

2 Open Collector (NPN)
1 Form C Relay

>  Analog Inputs:

1 voltage (0-10VDC)
1 current (4-20mA)

>  Analog Outputs:

2 Outputs (0-10 VDC, 2-10 VDC can be converted to 4-20mA) proportional to speed and load

>  Serial Communications:

2-Wire RS-485 Modbus RTU protocol for programming, monitoring and controlling.
See below for more communication options.

>  Other:

Speed Potentiometer Power Supply
Signal Common

> Programmable Features:

Carrier Freq. 2.5 – 14 kHz
Independent Accel and Decel Ramps
120 Hz Maximum Output Freq.(650 Hz available)
DC Injection Braking
PID Setpoint Control
Critical frequency avoidance bands

> Speed References:

Keypad
Floating Point Control (MOP)
0-10 VDC Analog Reference (scalable)
4-20mA Analog Reference (scalable)
Potentiometer
4 Programmable Preset Speeds
Serial Communications Speed Reference

> Standards and Conformance

UL & cUL (North America)
CE (Europe)
-Low Voltage Directive (EN61800-5-1)

Two Year Warranty

The remote keypad / Display provides for drive operation (start, stop, direction and speed), programming and monitoring. It provides all the functionality of the standard drive mounted keypad and display.

Dynamic Braking

Packaged Dynamic brake option includes control and resistors in an easy to implement solution for fast stopping or deceleration requirements.

Communications:

The standard MCH Series drives all contain RS-485 Modbus RTU communications. Other popular HVAC communication protocols are optionally available in the MCH Series. The protocols include Johnson Controls Metasys N2, Siemens P1, BACNet and Echelon LONWorks

3-Contactor Bypass:

This option allows the motor to be operated “across-the-line” for critical applications where a redundant means of motor operation is required. This option is factory assembled and wired. The 3-contactor design allows the drive to be removed if required for service, while the bypass is left in place to operate the motor. The bypass can also be factory configured with door interlocked disconnect switch, door interlocked circuit breaker, line reactor, 24 VDC power supply and automatic transfer to bypass capabilities. The bypass option is available in NEMA 1 and NEMA 12 enclosures.

Option Box:

The option box allows options such as input disconnect switch, input fuses, and/or input line reactor to be added to the drive. These options are factory assembled and wired in a NEMA 1 enclosure.