6SX7010-0KC00 6SE7090-0XX84-0KC0 SIMOVERT MASTERDRIVES EB2 Expansion Board 6SX7O1O-OKCOO 6SE7O9O-OXX84-OKCO

6SE7090-0XX84-0KC0 | SIMOVERT MASTERDRIVES EB2 — Floating Digital Outputs / Relay Changeover / Analog I/O / BICO / ADB Required

What the EB2 Adds — and Why Floating Outputs Are Not Just "More Outputs"

The SIMOVERT MASTERDRIVES CUVC or CUMC base control unit provides a defined set of digital and analogue terminals. For straightforward applications — a basic speed-controlled conveyor, a standard pump drive — the base I/O is adequate. Complex machine architectures with multiple isolated status outputs, relay contacts for external circuit switching, or analogue feedback requirements run out of base I/O quickly.

The EB2 addresses this with two electrical capabilities the base unit does not provide: floating digital outputs and a relay changeover contact.

Standard referenced digital outputs share their signal return with the drive's internal logic ground. In machines where the drive is isolated from the control cabinet's common reference, or where multiple drives share signal cables and ground loops are a concern, referenced outputs inject common-mode errors into the signal path.

Floating outputs use optocoupler isolation between the EB2's signal ground and each output terminal. No conductive path exists between the drive's reference potential and the external signal circuit — reliable logic communication regardless of ground potential differences between the drive and the PLC or HMI.

The relay changeover contact provides complete galvanic isolation between the drive electronics and the switched circuit. Fault status signals into a 230VAC alarm panel, "drive ready" contacts in a safety relay circuit, or PLC inputs at a different potential — all connect through the relay without electrical coupling to the drive.

Key Specifications

ADB — The Required Mounting Carrier

The ADB (6SE7090-0XX84-0KA0) is the intermediate adapter board inside the MASTERDRIVES enclosure that provides the slot connectors for miniature-format optional boards — EB2, SBP, CBP2, and others. Without it, the EB2 has no mounting or electrical connection.

For drives without any existing optional boards, the ADB is a separate required item. Drives with existing optional boards (SBP encoder board, CBP2 PROFIBUS board) already have an ADB installed — the EB2 plugs directly into an available slot. A maximum of two EB2 boards per drive; if both slots are filled, SCB/SCI remote terminal architectures provide further expansion.

BICO Integration — No Fixed Terminal Functions

Every I/O point on the EB2 participates in the MASTERDRIVES BICO (Binector-Connector) parameter system. Digital signals are "binectors"; analogue signals are "connectors" — all internally routable to any drive function through parameter settings.

The EB2's digital output at position X421 is a transistor terminal; what it signals depends entirely on which binector is assigned. "At-setpoint," "overload warning," "drive ready," "fault active" — any internal drive status routes to any EB2 output through a single parameter change, without hardware modification. The same flexibility applies to the analogue input: an external 4–20mA signal fed into the EB2 appears as a connector value available for speed trim, torque limit, or any other parameterisable function. DriveMonitor and STARTER provide graphical BICO connector views that make these assignments straightforward.

EB1 vs EB2 — Choosing the Right Expansion Board

Choose EB1 when only additional referenced digital outputs are needed. Choose EB2 when isolated outputs, a relay contact, or analogue I/O is required. Both can coexist in the same drive if ADB slots permit.

FAQ

Q1: Can the existing ADB from another optional board be reused?

Yes. The ADB is a shared carrier with multiple slots. If the drive already has any optional board installed, an ADB is already fitted. The EB2 plugs directly into an available slot — a new ADB is only needed if none is currently installed.

Q2: The EB2 is discontinued — how is it sourced?

Through the established MASTERDRIVES optional board aftermarket — industrial electronics surplus dealers and specialist drive parts suppliers with tested boards sourced from decommissioned equipment. Search by exact part number 6SE7090-0XX84-0KC0 or cross-reference 6SX7010-0KC00. EB1 and EB2 are physically similar but functionally different — confirm the EB2 designation before ordering.

Q3: Can the EB2 be installed or removed while the drive is powered?

No. All optional boards must only be handled when the drive is completely powered down and the DC bus has discharged. Hot-swapping risks damage to the board, ADB connectors, and main control unit. Observe ESD precautions throughout.

Q4: How are EB2 terminals assigned during commissioning?

The EB2 terminals appear in the drive's parameter list at addresses determined by slot position (G74/G75 for the first EB2, G76/G77 for a second). BICO source parameters (e.g., P665 for digital output 1) are set to the binector number of the desired drive function. DriveMonitor and STARTER provide graphical BICO views for this assignment.

Q5: What is the cross-reference between 6SE7090-0XX84-0KC0 and 6SX7010-0KC00?

Both numbers refer to the identical EB2 board — one is the drive spare parts catalog number, the other is the component cross-reference. Searching both numbers in aftermarket inventories increases the likelihood of locating available stock.