SBK-U-VBA-XX

What does this accessory do?

It converts the CN1 I/O connection into a terminal block format, making field wiring for digital inputs, digital outputs, alarm, brake control, and encoder divided pulse outputs more convenient during panel build and commissioning.

Which systems is it intended to be used with?

It is intended for use with Yaskawa SigmaLogic7 Compact / Sigma-7 SERVOPACK CN1 I/O wiring, specifically the 200 V class units that use the CN1 I/O connector and matching pinout.

Is it suitable for 400 V applications?

No. This terminal block conversion kit is specified for 200 V models only. For 400 V models, the CN1 connector arrangement differs and this kit is not listed as applicable.

What do the “xx” characters represent in the model code?

The “xx” indicates the cable length variant for the conversion kit (for example 0.5 m, 1.0 m, or 3.0 m versions are commonly used).

What signals can be wired through the CN1 terminal block conversion?

Typical CN1 signals include brake output (/BK+ and /BK-), servo alarm output (ALM+ and ALM-), a 24 VDC input supply for the digital input circuitry (+24VIN), multiple general-purpose digital inputs (including overtravel inputs), signal ground (SG), encoder divided pulse outputs (PAO, PBO, PCO and complements), and additional general-purpose digital outputs.

Does it provide the 24 VDC supply needed for the inputs?

No. The 24 VDC supply used for the digital input signal power supply input (+24VIN) must be provided externally and should be within 24 VDC ±20%.

Can the digital inputs be wired as sink or source?

Yes. The input circuits use bi-directional photocouplers, allowing either sink or source wiring depending on your control scheme.

Are there any wiring considerations when using a 24 V brake?

Yes. If a 24 V brake is used, it is recommended to use a separate power supply for the brake rather than sharing the same supply as the CN1 I/O power, to reduce the risk of I/O malfunction.

What are the limits for the digital output circuits brought out on CN1?

The photocoupler digital outputs brought out via CN1 are typically used within a maximum of 30 VDC, with an allowable current range of 5 mA to 50 mA DC (depending on the specific output).

What are the encoder divided pulse outputs used for?

The divided pulse outputs (Phase A and Phase B, plus an origin pulse) allow a host device to receive encoder-derived pulse signals via line-driver style outputs, typically requiring a suitable line-receiver on the receiving end.

How should shielding and grounding be handled?

For best noise immunity, use shielded cabling where applicable and terminate shields appropriately. CN1 includes signal ground (SG), and where a connector shell is used, the shield is commonly bonded at the connector shell/frame ground point as part of good panel grounding practice.

Is this accessory interchangeable with flying-lead CN1 cable options?

It serves a different wiring preference: the terminal block conversion approach is typically chosen for structured panel wiring and easier termination, while a flying-lead cable is typically chosen for direct point-to-point wiring. The SBK-U-VBA-XX is the terminal block conversion kit option.