ICS Triplex T8846 Speed Input Field Terminal Assembly
$123.00
$320.00
Description
Configured for field termination and signal conditioning of speed sensors in the Trusted TMR Safety System, the ICS Triplex T8846 (T8846 Speed Input Field Terminal Assembly) provides the physical interface between field speed inputs and the T8442 Speed Monitor Module. The assembly supports nine speed input channels in three groups of three, with fused dual 24 VDC field power feeds and electrical isolation between input groups and the system backplane.
Hardware Specifications
| Parameter | Specification |
|---|---|
| Model | T8846 |
| Part Number | PP49283-8 |
| Brand | ICS Triplex / Rockwell Automation |
| Product Type | Speed Input Field Terminal Assembly (SIFTA) |
| System Compatibility | Trusted TMR Safety System |
| Compatible Module | T8442 Speed Monitor Module |
| Channel Capacity | 9 speed input channels, arranged in 3 groups of 3 |
| Compatible Sensors | Active speed sensors, including totem-pole and open-collector types; passive magnetic/inductive speed pickups |
| Field Power Supply | Dual 24 VDC feeds, diode-commoned |
| Channel Fuse Rating | 50 mA per channel |
| Diagnostics | On-board LED indicators for field power integrity |
| Isolation | Electrical isolation between input groups and system backplane |
| Mounting | Standard DIN rail |
| Dimensions | 31.8 mm x 168 mm x 147 mm |
| Weight | 0.8 kg |
| Safety Rating | SIL 3 compliant within the Trusted system context |
TMR Speed Input and Field Isolation
The T8846 divides the nine speed inputs into three independent groups. The group isolation limits electrical fault propagation between sensor sets and the system backplane. Dual 24 VDC field supplies are diode-commoned, while individual channel fuses provide protection against field short circuits and overcurrent conditions.
The assembly accepts active and passive speed sensor interfaces used with the Trusted TMR speed monitoring architecture. LED indicators provide local indication of field power integrity. The SIFTA is intended for connection to the T8442 Speed Monitor Module through the Trusted system architecture.
Frequently Asked Questions
Q: How many speed input channels does the T8846 provide?
A: The T8846 provides 9 speed input channels arranged as 3 groups of 3.
Q: What field power arrangement is provided for the speed inputs?
A: The assembly provides dual 24 VDC feeds that are diode-commoned, with each channel protected by a 50 mA fuse.
Q: Does the T8846 provide electrical isolation between input groups?
A: Yes. The supplied specifications state electrical isolation between the input groups and the system backplane.
Field Installation Guidelines
Install the T8846 on the specified DIN rail with adequate mechanical retention. Route speed sensor wiring separately from high-current switching conductors and other sources of electromagnetic interference. Maintain appropriate separation between individual sensor groups where the installation requires fault segregation.
Terminate cable shields according to the grounding scheme specified for the Trusted system. Avoid creating unintended ground loops through shield connections. Verify sensor polarity, field supply wiring, fuse continuity, and terminal assignments before energizing the assembly.
Confirm that the connected speed sensors are compatible with the T8442 Speed Monitor Module and the T8846 input interface. After wiring, verify the field-power LED indications and inspect each channel for abnormal wiring resistance or short-circuit conditions before placing the speed monitoring loop into service.
Features
Minimum Order Quantity (MOQ)
We welcome bulk orders and have a minimum order quantity of just one unit.
Certificates and Documentation
Upon request, we can provide all necessary documentation, including Certificates of Origin/Conformance and other required export documents.
Delivery Time
For items in stock, we aim to deliver within 1-3 days after payment confirmation. Items with specified lead times will be delivered according to the quoted schedule.
Payment Methods
We accept 100% T/T (Telegraphic Transfer) payment before shipping. For items with lead times, a 30% deposit is required upfront, with the remaining 70% due before shipment. For RMB transfers, please contact us if you have an agent in China.
Warranty
We offer a standard one-year warranty on all new and original items. If you require an extended warranty, please contact us for additional cost details.
Refund and Return Policy
Your satisfaction is important to us. If you need to return an item, it must be done within 30 days of the order date. The product must be unused, unopened, and in its original packaging with all accessories included. Refunds are processed within 5-7 business days after we receive the returned item. Please note that shipping and related charges are non-refundable.
Featured
Complementary products
Express Delivery
Fast shipping for your urgent needs.
Large Inventory
Extensive stock ensures quick availability.
Premium Quality
Genuine, high-grade PLC & DCS components.
24/7 Customer Support
Reliable service for clients worldwide.