| FLEX I/O / 1794-IB16D | OverviewSpecificationsIntegrationRelated ModelsFAQ |
A diagnostic input module that combines sixteen field-state channels with module and field-circuit status. It helps the controller separate valid input data from reversed power, sensor-power short, open-wire and severe module conditions.
| 16 INPUTS Current sinking |
24 VDC Nominal field input |
DIAGNOSTIC Power and wiring status |
| Input channels | 16 current-sinking inputs |
| Nominal input voltage | 24 VDC |
| On-state voltage range | 10...31.2 VDC |
| On-state current | 2.0 mA minimum; 8.2 mA nominal at 24 VDC; 12.1 mA maximum |
| Off-state limits | 5.0 VDC and 1.5 mA maximum |
| Nominal input impedance | 3.1 kohm |
| FLEXBus current | 30 mA at 5 VDC |
| Maximum power dissipation | 8.5 W at 31.2 VDC |
| Maximum thermal dissipation | 29 BTU/hr at 31.2 VDC |
| Sensor-power voltage drop | 2.2 VDC maximum |
| Sensor-power current | 50 mA maximum |
| Operating temperature | 0...55 deg C |
| Isolation voltage | 50 V continuous between field side and system |
| Channel isolation | No isolation between individual channels |
| ModuleError | Reports module-level diagnostic status |
| PowerReversed | Indicates reversed external field-power polarity |
| PowerShort | Indicates a detected sensor-power short condition |
| OpenWire | Indicates an open field path under applicable diagnostic conditions |
| Fault | Marks input data invalid when the connection is lost or a severe module fault occurs |
| Data | Sixteen-bit input state word for the field channels |
Diagnostic states support maintenance decisions but do not replace field-circuit testing. Sensor leakage, wiring design, supply condition and controller configuration affect the interpreted result.
| 24 VDC SENSOR Field state and sensor power |
> | 1794-IB16D Input conversion and diagnostics |
> | FLEX I/O ADAPTER Network data transfer |
> | CONTROLLER Input and status tags |
| Integration boundary: the module requires a supported FLEX I/O terminal base, compatible adapter and correct controller profile. Channel count alone does not establish interchangeability. |
| Terminal base Confirm a supported 32-terminal base and the required suffix. |
Field polarity Confirm sinking-input wiring, common arrangement and sensor supply. |
Controller profile Match the module definition, data format and diagnostic handling. |
| Filter setting Select input filtering appropriate to signal speed and noise. |
Channel test Exercise every input and verify the corresponding controller bit. |
Diagnostic test Validate intended fault detection without creating unsafe conditions. |
| 01 | What does the D suffix add? | It adds diagnostic status for field-power and wiring conditions beyond the sixteen basic input states. |
| 02 | Are the channels sinking or sourcing? | They are current-sinking inputs. Select compatible field devices and wire the common and sensor supply accordingly. |
| 03 | Which terminal bases are supported? | Common supported choices include 1794-TB32, 1794-TB32K, 1794-TB32S and 1794-TB32SK. |
| 04 | Does each channel have electrical isolation? | No. Isolation is between the field side and system side, not between individual input channels. |
| 05 | How is open-wire detection used? | The diagnostic circuit evaluates the field path under supported wiring and sensor-power conditions. Device leakage and circuit design must be considered. |
| 06 | Can 1794-IB16 replace this module? | Only after assessing the loss of diagnostic data, controller profile changes and any effect on the machine safety or maintenance strategy. |
| 07 | What should be checked before ordering? | Confirm catalog number, series, terminal base, adapter, controller profile, field voltage, sensor type and environmental requirement. |
| 08 | What should be tested after installation? | Test all input states, diagnostic bits, power polarity, filter behavior and controller response before releasing the equipment. |
| 1756-IM16I | VPM-8100Q-000 | 2711-K6C9L1 |
| MA40-7073 | 1785-BEM | FIO-11 68679079 |
| 1747-KFC15 | NA50-40NAMKNN-CE | 2711P-K6C5D |
| E24KN9ZCCM | MDH-L425-D | 1771-SN |
| 81003-438-51-R | 4L-L4-M2-B1A | 1769-L33ER |
| CC-TDOR01 51308376-175 | D200175 AP31 | NPA-20NN-50-E8 |
| 1797-IE8NF | MSD5AZA1Y | 1784-PKTX |
| 71503-052130 | 2711P-B6M20D | C98043-A7600-L1 |
| 05V-0070L | SPIDER 5TX | 1785-L60B/C |
| 03-408-608-303 | 140DAO85300 | 103147 SAE-14 |
| WR-D4001 | TM30050 | VPM-8120X-5061-P |
| 11-018-164 | NCR-DABOA2D-401B | 1746-NI8 |
| VPM-8100LS-000 | 194r-c30-1753 | 02-681-339 |
| 1771-IL | 79835-66515 | 22TA-L4-SS |
| 1734-OE2CK | 0-57412-E | WMZT3D20T |
| E2170/1/80 | 2711P-K4M20D | F4000-10N-W-M |
| A413141 BIU82 | 2711-K6C1 | 2080-DNET20 |
| DCVR-3 SC-68224 | 4L-E4-C1A-TT | FTD76-10-D |
| CS-SS-RHR1HE-03 | VPM-8100X-001-P | 2711P-K6C20A |
| EPDM 76/DN80/3 | MSD013A1Y | 2711-K6C8 |
Send the full catalog number, series, terminal base, adapter, controller profile, quantity and delivery destination for a precise quotation.
CONTACT MIYA ZHENG| Returns & replacement | Contact us within 7 days after receipt if an issue occurs. Returned items must remain in their original condition and include the return reason. A replacement or refund is arranged after receipt and inspection. Return shipping costs are the buyer's responsibility. |
| Ordering details | Provide the quantity, delivery country, complete label, series, terminal base, adapter and controller identity. Availability and lead time are confirmed with the quotation. |
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