ABB RDCU Drive Control Units

ABB RDCU Drive Control Units

Safety instructions

Do not attempt any work on a powered drive. After switching off the mains, always

allow the intermediate circuit capacitors 5 minutes to discharge before working on

the frequency converter, the motor or the motor cable. It is good practice to check

(with a voltage indicating instrument) that the drive is in fact discharged before

beginning work.

Avoid touching the circuit board (RMIO) inside the RDCU unit in order to minimise

the risk of damage caused by static electricity.

Do not use excessive force when detaching connectors or removing the cover of the

unit.

Identifying different types of unit

Before installation, check that the RDCU unit has the correct application program for

the converter hardware in question. There is a label attached to the cover of the

RDCU unit that lists “SW TYPE”, “SW CODE” and “DEVICE TYPE”.

“SW TYPE” identifies the application program that is loaded into the RDCU unit.

Some of the most common “SW TYPE” codes are AMXRxxxx (ACS800 System

Application Program), ASxRxxxx (ACS800 Standard Application Program),

AHxRxxxx (ACS800 Pump Control Application Program), and IxxRxxxx (IGBT

Supply Unit Application Program). Check that the application program corresponds

to the original order.

Check also that the “DEVICE TYPE” indicated matches that of the converter

hardware.

24 VDC power input (X34)

Voltage: 24 VDC ±10%

Typical current consumption (without option modules): 250 mA

Maximum current consumption: 1200 mA (with option modules inserted)

Pin designations: 1 = not used; 2 = +24 V; 3 = 0 V

Control panel connection (X39)

General: For connection of CDP-312R control panel

PPCS link (V57, V68)

General: Optical fibre connection to inverter (or IGBT supply) module

Optical component type: 10 MBd

Protocol: ABB PPCS (Power Plate Communication System)

Jumper J1

General: See Isolation and grounding below

Pitch: 2.54 mm

LEDs

“Power”: Green; denotes +5 V power OK

“Fault”: Red

Ambient conditions

Operating temperature: +0 … +60 °C (32…140 °F)

Storage temperature: -40 … +70 °C (-40 … +158 °F)

Applicable standards

Immunity: IEC 61800-3 (Limits: Industrial, Second environment); EN 50081-2

(Limits: Industrial)

Emission: EN 50081-2 (Limits: Industrial)

PELV requirements: The terminals of the RMIO board as well as on the optional

modules attachable to the board fulfil the Protective Extra Low Voltage (PELV)

requirements stated in EN 50178 provided that the external circuits connected to the terminals also fulfil the requirements.