Description
Description
The Schneider Electric ASB817116 is a 16-channel digital input module designed for integration within Modicon 800 Series I/O systems. This module provides reliable monitoring of 115 VAC discrete signals, making it suitable for industrial environments such as power utilities, petrochemical processing, and mining operations. It is designed to interface directly with field devices including proximity sensors, limit switches, and motor starter auxiliary contacts, ensuring consistent signal acquisition even in electrically noisy settings.
Features
- 16 isolated discrete input channels for high-density signal monitoring.
- Integrated passive RC filtering to suppress contact bounce and high-voltage transients.
- Optical isolation between field inputs and the controller backplane to protect internal circuitry from voltage surges.
- Standardized 800 Series chassis compatibility for streamlined system expansion.
- Low power consumption from the backplane, supporting efficient rack-level energy management.
Applications
This module is typically deployed in applications requiring high-voltage discrete signal sensing. It is frequently utilized in control panels that monitor motor status, safety interlocks, and process-critical switch states within distributed control architectures.
Technical Specifications
| Model |
ASB817116 |
| Input Channels |
16 |
| Nominal Voltage |
115 VAC |
| Voltage Range |
85 to 130 VAC |
| Frequency Range |
47 to 63 Hz |
| ON-State Threshold |
85 VAC (min) |
| OFF-State Threshold |
40 VAC (max) |
| Input Impedance |
12 kOhm at 60 Hz |
| Isolation |
1500 VAC (channel-to-bus) |
| Operating Temperature |
0 to 60 deg C |
| Storage Temperature |
-40 to 85 deg C |
| Relative Humidity |
5 to 95% non-condensing |
Installation Guidelines
- Ensure the system power is disconnected before installing or removing the module from the 800 Series chassis.
- Verify that field wiring is properly shielded and routed away from high-current power cables to minimize electromagnetic interference (EMI).
- Ensure proper grounding of the chassis backplane to maintain the integrity of the optical isolation barrier.
- Maintain adequate clearance around the module to facilitate proper airflow and cooling, adhering to the specified operating temperature range.
- Handle the module using standard ESD-safe practices to prevent damage to internal logic components.
FAQ
What is the primary function of the ASB817116 module?
The ASB817116 is a digital input module that converts 115 VAC field signals into logic-level signals for the Modicon 800 Series controller, allowing for the monitoring of discrete devices like switches and sensors.
Does this module require external power for the input channels?
The module is designed to accept 115 VAC directly from the field circuits; the 5 VDC power required for internal logic processing is drawn directly from the system backplane.
What type of isolation does this module provide?
It features optical isolation between the field-side 115 VAC inputs and the controller's internal backplane, providing a 1500 VAC dielectric barrier to protect the system from inductive spikes.
