Board C98043-A7002-L1-13 6RY1703-0DA01 C98043A7002L113 6RY17030DA01 C98O43-A7OO2-L1-13 6RY17O3-ODAO1 6RY1 703-0DA01

Siemens C98043-A7002-L1-13 | SIMOREG DC-MASTER 6RA70 Power Interface Board (PIB) — L1-13 Variant

Part Number: C98043-A7002-L1-13

Manufacturer: Siemens AG (Germany)

Product Type: PIB — Power Interface Board (PC Circuit Board / Power Board) 

Firing Pulses for the Armature Bridge

The C98043-A7002-L1-13 is the Power Interface Board (PIB) for the SIMOREG DC-MASTER 6RA70 DC drive. It generates precisely timed thyristor gate pulses for the drive's armature converter bridge — the assembly that converts three-phase AC into variable DC voltage for motor armature control.

The firing angle determines the DC output voltage: a small firing angle produces near-maximum DC voltage; increasing the firing angle reduces DC output. The CUD1 control board commands the firing angle in real time based on the speed and current regulation loops. The PIB translates those commands into actual gate pulses delivered simultaneously to the correct thyristor positions.

The suffix "-13" identifies a specific production sub-variant of the L1 series PIB. This suffix typically indicates a board configuration tied to a particular drive power section assembly — confirming the exact C98043-A7002-L1-13 designation from the installed board's label is necessary before ordering.

What the Suffix Means

Within the C98043-A7002 PIB family, the L designation identifies the base board generation (L1 = first generation, L4 = four-quadrant variant). The numeric suffix after L1 — in this case -13 — identifies a specific production sub-variant relating to the power section configuration it was designed for.

Both C98043-A7002-L1 and C98043-A7002-L1-13 are Power Interface Boards for single-quadrant (1Q) drive configurations. The -13 suffix distinguishes this specific variant within the L1 sub-series. Always match the full part number, including suffix, when sourcing a replacement.

Key Specifications

FAQ

Q1: The SIMOREG shows asymmetric DC output current or thyristor fault codes. Is the PIB the likely cause?

Unequal firing between thyristor positions is a direct PIB symptom. One failed firing channel delivers pulses at the wrong phase angle, causing current imbalance and torque pulsation. Measure gate pulse timing on each thyristor with an oscilloscope to confirm which firing channel has drifted or failed.

Q2: Can C98043-A7002-L1 substitute for C98043-A7002-L1-13?

The -13 suffix identifies a specific circuit or connector variant. Substituting the base L1 for L1-13 without confirming compatibility with the specific drive power section is not recommended. Verify the drive's rating plate and internal documentation to confirm which exact variant is required.

Q3: Does PIB replacement require CUD1 reconfiguration?

No. The PIB holds no drive parameters. After a like-for-like replacement, the CUD1 immediately controls the new board with its existing firing angle calculations. No reconfiguration step is needed.

Q4: A thyristor failed and damaged the PIB. What must be done before fitting a replacement PIB?

Test all thyristors in the armature bridge for short circuits before fitting the new PIB. A shorted thyristor produces an immediate high-current event that destroys the gate drive circuit on the replacement board. Only install the new PIB after confirming all thyristors are healthy.

Q5: Where is the discontinued C98043-A7002-L1-13 sourced?

Specialist SIMOREG DC drive repair companies and industrial spare parts dealers hold exchange stock for PIB variants. Request the exact C98043-A7002-L1-13 number — do not accept adjacent variants without compatibility confirmation. Request a functional test certificate before acceptance.