MT70-CTB-B
Car-top interface boards for elevator input, relay-output and communication functions. The A, B and B1 configurations use different installation arrangements; select the exact board version for the controller and available mounting space.

| Item | Specification |
|---|---|
| Model family | MT70-CTB-A / MT70-CTB-B / MT70-CTB-B1 |
| Processor | 32-bit industrial controller |
| Digital inputs | 14 optically isolated inputs |
| Relay outputs | 8 relay outputs |
| Analogue input | One −10 V to +10 V channel |
| Communication | CAN bus and serial Modbus |
| Control configuration | Up to 48 landings in the matching system |
| Setup interface | External LCD operator interface |
| Feature | MT70-CTB-A | MT70-CTB-B | MT70-CTB-B1 |
|---|---|---|---|
| Mounting arrangement | Horizontal installation | Vertical plug-in installation | Vertical installation, interface-optimized version |
| Terminal arrangement | Side or front-facing access | Compact vertical arrangement | Version-specific OEM layout |
| Digital input configuration | 14 isolated inputs | 14 isolated inputs | 14 isolated inputs, enhanced interference protection |
| Relay-output configuration | 8 relay outputs | 8 relay outputs | 8 relay outputs, contact-load optimization |
| Analogue channel | One −10 V to +10 V channel | One −10 V to +10 V channel | One −10 V to +10 V channel with filtering optimization |
| Communication | CAN bus / serial Modbus | CAN bus / serial Modbus | CAN bus / serial Modbus |
| Landing configuration | Up to 48 | Up to 48 | Up to 48 |






The A layout uses horizontal installation, while the B layout uses a vertical plug-in arrangement. Match the physical layout and connector access to the installation.
The photograph shows the A-version layout. Select A, B or B1 according to the required installation and interface configuration.
Functions depend on the controller configuration. Match the I/O assignments and exact wiring diagram for the installation.
Match the board version, mounting arrangement, connectors, firmware and configuration before selecting a replacement.
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