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        • Lifecycle status

          Discontinued / Obsolete by OEM
          Apter Power sources tested Siemens expansion units to keep your complex drive controls running.

        6DD1601-0AH0

        / 4.9
        1001 reviews ｜ Need a Specific Revision?
        The 6DD1601-0AH0 ITDC expansion module provides gating, current control, and auto-reversing for line-commutated 6-pulse drive converters up to 400 Hz, featuring 1 SITOR interface, 2 analog outputs, 4 binary I/Os, and one incremental encoder input.
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        Warranty Policy
        We provide 1 year warranty for all remaining parts.
        The warranty period is one year from the date of shipment, unless otherwise stated in the parts description. We guarantee that the project will not exhibit functional defects that may occur under normal operating conditions during the warranty period.
        Return Notice
        The warranty period is one year from the date of shipment, unless otherwise stated in the parts description. We guarantee that the project will not exhibit functional defects that may occur under normal operating conditions during the warranty period.
        In the event of a defect, we will send new equipment, repair equipment or refund the purchase price based on our availability. You must contact us to obtain a return authorization and return the defective device to us within 14 days of reporting the defect.
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        Various transportation options are available in each country. Shipping methods and fees are clearly indicated on all quotations.Various transportation options are available in each country. Shipping methods and fees are clearly indicated on all quotations.
        Parts Availability
        Apter Power offers a wide range of components, products and services related to industrial automation. We also supply new products from a variety of quality manufacturers.
        How to order
        We have been working hard to update our inventory. If we have stock or parts available for new factory purchases, you can contact the order online. If we do not currently have an inventory, the displayed quantity will show "Ask". Please create an online quote or contact us by phone, fax or email to check availability.

        Technical specifications for 6DD1601-0AH0

        • Manufacturer:
          Siemens
        • Part Number:
          6DD1601-0AH0
        • Product Family:
          Siemens Simadyn
        • Product Type:
          Expansion Module
        • Stock:
          1
        • Function:
          Gating, current control, auto-reversing for line-commutated 6-pulse drive converters
        • Output Frequency:
          Max. 400 Hz
        • Compatible Power Sections:
          SITOR
        • Host CPU:
          PM5 or PM6 (max. 2 ITxx modules per CPU, but 2×ITDC not supported)
        • Slot Usage:
          1 additional slot per module
        • Incremental Encoder Input:
          1 (with zero pulse; A, B quadrature; 1 MHz max; 15V HTL or 5V push-pull/RS485)
        • Electrical Isolation:
          None (on I/Os)
        • Encoder Type Selection:
          DIL switch S1 (5V: 0V threshold; 15V: 7V threshold)
        • Pain Point Solved:
          Solves the need for a compact, integrated gating and current control module for SITOR-based 6-pulse drives with flexible encoder interfacing (5V/15V) and auto-reversing, eliminating separate components.
        • Weight:
          0.6 kg
        • Estimated shipping dimensions:
          4x26.1x26.1cm
        • Tariff Code:
          8517795000
        • Country of origin:
          Germany
        • Place of shipment:
          Xiamen, Fujian, China
        By purchasing this item, you agree to the Terms & Conditions, ApterPower is not an authorized distributor for listed manufacturers or tradenames and therefore the manufacturer's warranty does not apply. All our products come with ApterPower's 1-year warranty.

        More Information

        Overview Manuals Specifications Application Performance Application Scenarios

        Features:

        • Includes auto-reversing stage, current controller, and gating unit up to 400 Hz.
        • Supports 5V (push-pull/RS485) or 15V (HTL) encoders with DIL switch selection, up to 1 MHz.
        • Provides 1 SITOR interface, 2 analog outputs, 4 binary inputs, and 4 binary outputs.
        The 6DD1601-0AH0 combines three critical functions for line-commutated drives: auto-reversing, current control, and gating. Auto-reversing eliminates external contactors, simplifying direction changes. The current controller maintains stable torque under varying loads, while the gating unit generates firing pulses for 6-pulse thyristor bridges at frequencies up to 400 Hz. This integration reduces cabinet space, wiring, and component count. The module is especially suited for SITOR power sections, commonly found in DC drives and low-frequency AC drives. By consolidating these functions, the 6DD1601-0AH0 lowers engineering effort and improves system reliability compared to discrete implementations.

        The encoder interface on the 6DD1601-0AH0 accepts both 5V and 15V incremental encoders via simple DIL switch S1 settings. For 5V encoders (RS485 differential or push-pull), set the threshold to 0V; for 15V HTL encoders, use 7V. The input supports quadrature signals A and B (90° shifted) plus a zero pulse, with a maximum frequency of 1 MHz. This flexibility allows the module to work with a wide range of existing encoders, from older 15V types to modern 5V differential units, without external signal conditioners – saving cost and panel space.

        Beyond drive control, the 6DD1601-0AH0 provides one dedicated SITOR interface for direct connection to SITOR power sections, two analog outputs (e.g., for speed or torque reference), four binary inputs (e.g., for limit switches or enable signals), and four binary outputs (e.g., for status or contactor control). This I/O richness allows the module to handle many auxiliary functions without additional I/O cards. However, note the absence of electrical isolation – external isolators are recommended when connecting to noisy field devices or long cables. Properly applied, these I/Os make the 6DD1601-0AH0 a compact, self-contained drive controller.

        The 6DD1601-0AH0 Siemens Expansion Module may still be available for purchase and support from Apter Power beyond End-Of-Life (EOL) by the manufacturer (OEM).

        Siemens 6DD1601-0AH0 Expansion Module Manuals, Datasheets, Drivers, Link Important Notice: Other accessories, manuals, cables, calibration data, software, etc. are not included with this equipment unless listed in the above stock item description. All prices are shown in USD.
        Siemens 6DD1601-0AH0 Expansion Module Specs

        General

        • Manufacturer Siemens
        • Model 6DD1601-0AH0
        • Condition New Original ready stock
        • Product Family 6DD1601-0AE0,6DD1601-0AJ0
        Important Notice: Other accessories, manuals, cables, calibration data, software, etc. are not included with this equipment unless listed in the above stock item description. All prices are shown in USD.
        • Heavy Industrial Drive Control: Works with PM4, PM5, or PM6 control modules for precise driving of large DC motors and synchronous/asynchronous motors.
        • Power Electronics Units: Designed specifically for SITOR series converters to regulate trigger pulses in high-voltage direct current (HVDC) or static var compensators (SVCs).
        • Steel and Metal Rolling: Controls converter phase triggering in rolling mill drive systems requiring extremely high dynamic response.
        • High Dynamic Response: The SIMADYN D system features microsecond-level computation cycle times, enabling it to handle rapidly changing electrical parameters and ensuring the converter completes commutation compensation in an extremely short time.
        • Multiprocessor Coordination Efficiency: Through tight coupling with the main processor module, the ITDC module can perform complex arithmetic operations and closed-loop control algorithms (such as torque, speed, and position control) with extremely low latency.
        • Configuration Flexibility: Supports graphical configuration using CFC (Continuous Function Chart), allowing developers to build complex control logic like building blocks, significantly reducing debugging time and improving maintenance efficiency.
        • Multi-motor synchronization: In paper machines or continuous rolling production lines, ITDC controls the converters in each stage to ensure high consistency in torque and speed among the motors.
        • Energy management and compensation: In substations, it controls reactive power compensation devices and stabilizes the grid voltage by rapidly switching converter states.
        • Special power supply control: Such as high-power DC power supply systems for large electrolytic cells or special experimental setups.
        Description
        The 6DD1601-0AH0 is an ITDC expansion module designed for line-commutated drive converters, replacing the earlier PG16 module. It includes an auto-reversing stage, a current controller, and a gating unit supporting output frequencies up to 400 Hz. This module is especially suitable for connection to SITOR power sections and must be inserted on a CPU module such as PM5 or PM6. 

        When using the 6DD1601-0AH0, engineers benefit from a rich set of I/Os: one SITOR interface, two analog outputs, four binary outputs, four binary inputs, and one incremental encoder input with zero pulse detection. The encoder input accepts 15V (HTL) or 5V signals, including push-pull and RS485 differential signals, at pulse frequencies up to 1 MHz. 

        Configuration of the 6DD1601-0AH0 is straightforward using DIL switch S1 on the component side. The switch allows selection between 5V encoders (0V switching threshold) and 15V encoders (7V switching threshold) for tracks A, B, and the zero pulse. Switch S1.4 has no function.

        For 6-pulse drive converter applications requiring precise gating and encoder feedback, the 6DD1601-0AH0 delivers essential functionality. Its auto-reversing stage simplifies direction control, while the current controller ensures stable torque. The module's ability to handle both 5V and 15V incremental encoders makes it versatile for retrofitting or new drive systems. 
        Alternative Names
        6DD1601 0AH0 6DD16010AH0 6DD 1601-0AH0 6DDI60I-0AH0 6DD16O1-OAHO 6DD1601-0AE0 6DD1600-0BA1 6DD1600-0AK0 6DD1600-0AH0
        Technical notes
        The 6DD1601-0AH0 integrates auto-reversing, current control, and gating for 6-pulse line-commutated converters up to 400 Hz, eliminating the need for separate reversing contactors in many applications.Its incremental encoder input accepts both 5V (RS485/push-pull, 0V threshold) and 15V (HTL, 7V threshold) signals via DIL switch S1.
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        FAQS

        The following is a list of questions commonly asked by our customers. Please contact us if you have a question about our process that is not answered below.
        VIEW ALL FAQS
        Which CPU modules support the 6DD1601-0AH0?
        The 6DD1601-0AH0 must be inserted on a PM5 or PM6 CPU module. A maximum of two ITxx expansion modules can be attached to one CPU, but operating two ITDC modules on the same processor is currently not supported. Use only one 6DD1601-0AH0 per CPU.
        How do I configure the 6DD1601-0AH0 for a 15V incremental encoder?
        Use DIL switch S1 on the component side. Set S1.1 OFF for track A (7V threshold), S1.2 OFF for track B (7V threshold), and S1.3 OFF for zero pulse (7V threshold). This selects 15V encoder mode. S1.4 has no function.
        Does the 6DD1601-0AH0 provide electrical isolation on its I/Os?
        No, the 6DD1601-0AH0 has no electrical isolation on its inputs or outputs. In electrically noisy environments or where ground loops may occur, you must add external isolation devices to protect the module and connected equipment.
        What is the maximum output frequency of the 6DD1601-0AH0 gating unit?
        The gating unit of the 6DD1601-0AH0 supports a maximum output frequency of 400 Hz. This makes it suitable for line-commutated 6-pulse drive converters but not for high-speed applications beyond 400 Hz. Verify your drive's requirements before selection.

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