DAB MCE/C 30 – frequency inverter for circulation pumps in closed systems, 3 kW, 3× 400 V

Product detailed description

DAB MCE/C 30 (code 60144660) is a frequency converter for circulation pumps in closed systems such as heating, cooling and air conditioning circuits. It adjusts the motor speed to the actual needs of the circuit, so the pump does not run unnecessarily at full speed. Lower speeds reduce electricity consumption and mechanical stress, and the converter also prevents water hammer, thus extending the life of the pump.

Mounting directly on the motor

The converter is attached to the motor housing of the pump and is cooled by the airflow from the motor fan. It can operate in vertical and horizontal positions. A set with straps is used for mounting if the fan cover is sufficiently strong, or a set with a fan cover is used where the original cover cannot support the weight of the converter. The MCE/C 30 model is suitable for three-phase motors 3× 400 V with a rated power up to 3 kW, current 2.0–7.5 A and frame size 100.

Control modes

• constant differential pressure (factory setting) – suitable for example for two-pipe and floor heating with thermostatic valves or for primary circuit pumps
• constant curve – fixed speed set between minimum and rated frequency of the pump
• constant curve controlled by an external analog signal 0–10 V

Dual pumps and protections

The communication module allows connecting two MCE/C converters with a special cable. In the case of a dual pump or two pumps on common distribution panels, they then operate alternately every 24 hours, simultaneously or in master/standby mode. The converter protects the pump against overload (with adjustable limit), overvoltage, overcurrent and overheating, has an IP55 protection rating and is set on a graphical display with a guide. The differential pressure sensor 4 or 10 bar is ordered separately as an accessory. Electrical wiring must be performed by a qualified person.

Technical parameters

Frequently asked questions

Is the differential pressure sensor part of the delivery?
No, the sensor is ordered as an accessory – for MCE/C, differential sensors with a range of 4 bar or 10 bar are suitable. In the case of a dual connection, a connecting cable must also be ordered.

How is the converter mounted on the pump?
It is mounted on the motor housing and can operate in vertical and horizontal positions. If the motor fan cover cannot support the weight of the converter, a mounting set with a fan cover is used, otherwise a set with straps is sufficient.

For which pumps is the MCE/C 30 suitable?
For circulation and centrifugal pumps with a three-phase motor 3× 400 V with a power up to 3 kW and frame size 100. DAB uses it for example in the series ALME/ALPE, KLME/KLPE, CME, CPE, KCE, NKM-GE and KDNE.

Can the converter be used with a dual pump?
Yes, two MCE/C converters are connected with a special cable and can alternate every 24 hours, run simultaneously or operate as main and backup.