Product Introduction
The T9401/2 digital input module monitors eight (T9401) or sixteen (T9402) isolated digital input channels and measures input voltages in the range 0 V to 32 Vdc. Each channel supplies the digital state and voltage data to the processor module for field device state, line monitoring and field fault detection.
Technical Specifications
|
Manufacture |
ICS |
|
Model |
T9402 T9401 |
| Part Number | T9402 T9401 |
|
Description |
Digital Input Module |
|
Origin |
USA / Mexico |
|
Dimension |
20*15*5cm |
|
Weight |
0.45kg |
Product Details
T9401/2 Digital Input Module, 24 Vdc, 8/16 channel
| Functional Characteristics | |
| Input Channels |
T9401: 8 T9402: 16 |
| Performance Characteristics | |
| Safety integrity leve | IEC 61508 SIL 3 (1) |
| Safety level degradation | 1oo1D, 1oo2D,2oo3D |
| Safety accuracy limit | 1.0 Vdc |
| Self test interval | < 1 hour; system dependent |
| Sample update interval (no filter) | 6 ms |
|
Sequence of events Event resolution Time-stamp accuracy |
1 ms 10 ms |
Input modules give module and individual channel status indications through the front panel LEDs. These status indications are also connected to application variables and viewed at the Workbench. Comprehensive diagnostics at both system and module levels give clear fault indications which help fast maintenance and repair.
Signal and power isolation circuits divide each input channel from the remainder of the system, protecting the controller from field faults. An independent watchdog arrangement monitors the module operation and gives more fault containment by a shutdown mechanism should a fault occur.
These modules mate with the T9801/2/3 Digital input termination assemblies. When digital input modules are installed in a dual or TMR configuration they provide fault tolerant input functionality, enabling you to replace a faulty input module without interrupting the channel data flow to the processor modules.