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ABB

ABB NDCU-12K 64649604A Drive Control Unit with NIOC-02 and NAMC-11

SKU NDCU-12K 64649604A

In stock

12-month warranty
Free returns within 30 days

Manufacturer: ABB
Product No.: NDCU-12K 64649604A
Origin Sweden
Product Type: Drive Control Unit
Barcode: 85049099
Payment: T/T, Western Union
Weight: 0.5 kg
Shipping port: Xiamen
Warranty: 12 months

Product Description

Description

The ABB NDCU-12K 64649604A is a drive control unit used in compatible ABB variable-speed drive systems.

The unit combines NIOC-02 I/O interface hardware with NAMC-11 control hardware. Its front panel provides analog and digital I/O, relay outputs, RS-485 interfaces, DDCS communication channels, and 24 VDC connections.

The NIOC-02 section provides three analog input channels and two analog output channels. Six digital inputs and three relay outputs are also available for drive control and external signaling.

Multiple DDCS channels provide interfaces for application control, drive I/O, master-follower functions, and PC communication. Separate connections are provided for inverter and braking chopper communication.

The NDCU-12K should be replaced by matching the complete NDCU-12K / 64649604A identification together with the installed control and communication configuration.

Features

ABB drive control unit
Type designation NDCU-12K
ABB code 64649604A
NIOC-02 I/O interface
NAMC-11 control hardware
Three analog inputs
Two analog outputs
Six digital inputs
Three relay outputs
Dual RS-485 interfaces
Separate RS-485 control panel interface
Multiple DDCS communication channels
24 VDC control supply connections
24 VDC auxiliary output
Communication provisions for inverter and braking chopper interfaces
Front-panel terminal and connector identification

Applications

ABB drive control systems
Variable-speed drive maintenance
Legacy ABB drive system repair
Industrial motor control
Drive cabinet servicing
Replacement of installed NDCU-12K control units

Technical Specifications

Parameter	Specification
Manufacturer	ABB
Type	NDCU-12K
Code	64649604A
Product Type	Drive Control Unit
I/O Interface	NIOC-02
Control Board	NAMC-11
Analog Inputs	3
Analog Outputs	2
Digital Inputs	6
Relay Outputs	3
Serial Interfaces	RS-485
Optical Communication	DDCS
Control Supply	24 VDC connections provided

Analog Inputs and Outputs

Terminal	Function
X21-1	V REF
X21-2	GND
X21-3	AI1+
X21-4	AI1-
X21-5	AI2+
X21-6	AI2-
X21-7	AI3+
X21-8	AI3-
X21-9	AO1+
X21-10	AO1-
X21-11	AO2+
X21-12	AO2-

Digital Inputs

Terminal	Function
X22-1	DI1
X22-2	DI2
X22-3	DI3
X22-4	DI4
X22-5	DI5
X22-6	DI6
X22-7	24 DV
X22-8	24 DV
X22-9	DGND

Relay Outputs

Connector	Contacts
X25	RO1 NC / RO1 C / RO1 NO
X26	RO2 NC / RO2 C / RO2 NO
X27	RO3 NC / RO3 C / RO3 NO

Each relay output provides normally closed, common, and normally open contacts.

24 VDC Connections

Connector	Function
X24	24 VDC input
X23	24 VDC output, 200 mA
X14	24 VDC input

Communication Interfaces

Interface	Function
X28	RS-485
X29	RS-485
X19	RS-485 control panel interface
CH0	DDCS application controller
CH1	DDCS I/O
CH2	DDCS master-follower
CH3	DDCS PC interface
V11 / V12	PPCS inverter interface
V10	BRC braking chopper interface
V25 / V26	DDCS AMC-I/O

Optional Communication Board Positions

The NAMC-11 front-panel marking provides identification positions for:

NDCO-01
NDCO-02
NDCO-03

The presence of a specific NDCO communication board should be confirmed from the installed hardware. The NDCU-12K model number alone does not establish which NDCO option is fitted.

Installation & Commissioning

Verify both NDCU-12K and code 64649604A before replacement.
Confirm the installed NIOC-02 and NAMC-11 hardware configuration.
Record all X21, X22, X23-X29, X14, and X19 connections before removal.
Record all DDCS fiber connections and channel assignments.
Isolate the drive and verify the 24 VDC control supply is removed before servicing.
Preserve relay and digital-input wiring assignments during replacement.
Confirm any installed NDCO communication option separately.
Verify drive I/O, DDCS communication, control panel communication, and relay functions after installation.

Replacement Notes

Match the complete NDCU-12K 64649604A identification.
Do not interpret “12K” as a 12 kW power rating.
Do not apply complete-drive input or output voltage ratings to this control unit.
Verify NIOC, NAMC, and optional NDCO hardware before substitution.
Preserve DDCS channel assignments and drive parameters during replacement.

Shipping & Returns

Global Express Shipping

Standard Delivery: 4–6 business days via DHL, FedEx, and UPS.
Express Dispatch: Same-day dispatch for in-stock orders placed before 2:00 PM (GMT+8).
Worldwide Coverage: Serving over 150 countries.

Returns & Warranty

30-Day Guarantee: Returns accepted for in-stock products in original, factory-sealed packaging.
12-Month Warranty: Every industrial component is backed by our technical warranty.

FAQ

What is the ABB NDCU-12K 64649604A?

The ABB NDCU-12K 64649604A is a drive control unit combining NIOC-02 I/O interface hardware and NAMC-11 control hardware.

Which I/O does the ABB NDCU-12K provide?

The ABB NDCU-12K shown provides three analog inputs, two analog outputs, six digital inputs, and three relay outputs through the NIOC-02 interface.

Which communication interfaces are available on the NDCU-12K?

The ABB NDCU-12K provides RS-485 interfaces and multiple DDCS channels for application controller, I/O, master-follower, PC, inverter, and related drive communication.

Does the ABB NDCU-12K include NDCO-03?

The NDCU-12K front panel provides identification positions for NDCO-01, NDCO-02, and NDCO-03 options. The exact installed NDCO board should be verified from the individual unit.

What voltage does the ABB NDCU-12K use for control connections?

The ABB NDCU-12K front panel provides dedicated 24 VDC input connections and a 24 VDC auxiliary output rated at 200 mA.

What should be checked before replacing an ABB NDCU-12K?

Verify the NDCU-12K 64649604A identification, NIOC-02 and NAMC-11 hardware, optional NDCO board, I/O wiring, DDCS connections, RS-485 interfaces, and existing drive parameters.

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