Bachmann DIO280 Digital Input/Output Module
Configured for high-speed signal processing and direct actuator control in Bachmann M1 Automation System architectures, the Bachmann DIO280 00019114-00, also cataloged as the DIO280 Digital Input/Output Module, provides direct physical/electrical execution.
Suffix Breakdown & Model Matrix
| Part Number | Total Channel Count | Configurable Channels | Fixed Input Range | Fixed Output Range |
|---|---|---|---|---|
| DIO248 | 48 Channels | 16 Inputs/Outputs | 15-34 VDC | 18-34 VDC |
| DIO264 | 64 Channels | 16 Inputs/Outputs | 15-34 VDC | 18-34 VDC |
| DIO280 (00019114-00) | 80 Channels | 16 Inputs/Outputs | 15-34 VDC | 18-34 VDC |
Hardware Specifications
| Parameter | Specification |
|---|---|
| Model | DIO280 (00019114-00) |
| Brand | Bachmann |
| Origin | Austria |
| Weight | Standard Module Mass |
| Dimensions | M1 System Form Factor |
| Operating Temp | -30 to +60 deg C |
| Power Consumption | Internal 180 mA at 5 VDC |
| Digital Inputs | 32 to 48 Channels |
| Digital Outputs | 32 to 48 Channels (0.5 A per Channel, 24 A Max Total) |
| Input Voltage (High) | 15 to 34 VDC |
| Input Voltage (Low) | 0 to 5 VDC |
| Input Delay Filter | Standard: 600 us (Configurable 10 us to 270 ms) |
| Internal Input Resistance | 8 kOhm |
| Interrupt Inputs | 8 Configurable Channels |
| Counter Hardware | Up to 4 Channels (32-bit Resolution) |
| Max Input Frequency | 50 kHz (Single-Channel), 20 kHz (A/B Encoder) |
| PWM Resolution / Freq | 13-bit (0-100% Duty Cycle) / 1 Hz to 1 kHz |
| Configurable Valve Hold Time | 0 s to 2 s |
| Isolation Voltage | 500 V Galvanic Isolation |
Backplane Bus Communication Velocity & Determinism
The Bachmann DIO280 utilizes high-speed internal backplane bus integration to guarantee real-time cycle synchronization across the M1 processor backplane. Internal logic execution handles edge detection directly on the hardware level, routing high-frequency counter inputs (up to 50 kHz) and interrupt signals (8 total) without adding latency burdens to the central processor application loop. Furthermore, firm firmware flash compatibility across M1 system backplanes enables seamless firmware image matching and deterministic protocol transfers, maintaining system integrity even during full-load PWM channel switching.
Frequently Asked Questions
Q: How does the configurable PWM valve hold time reduce power consumption?
A: The DIO280 output hardware applies full coil voltage during the initial activation sequence (up to 2 s configurable hold time) to overcome mechanical inertia, after which it smoothly transitions to a PWM duty cycle. This action maintains hydraulic/pneumatic valve seal position while drastically cutting active coil power consumption and thermal dissipation.
Q: Can digital outputs on the DIO280 be connected in parallel to increase current drive capacity?
A: Yes, parallel connection of adjacent digital output channels is supported provided all parallel channels execute in the same operating mode. This enables total load capacity scaling beyond the single-channel limit of 0.5 A.
Field Installation Guidelines
Ensure complete power de-energization before inserting or pulling the module from the backplane rail. Mount the device vertically within the standard Bachmann M1 rack enclosure to promote natural thermal convection, taking care not to block thermal dissipation profiles. All field wiring carrying 24 VDC inductive valve signals or high-frequency encoder pulses (up to 50 kHz) must utilize shielded twisted-pair conductors. Route signal lines completely separate from high-voltage AC mains power. Ground all cable shields directly at the cabinet earth bus terminal block via low-impedance clamps, maintaining continuous 500 V galvanic isolation integrity across field and system logic boundaries.
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