OPTO 22 – SNAP-PAC-ROK _ SNAP PAC Redundancy Option Kit
OPTO 22 – SNAP-PAC-ROK _ SNAP PAC Redundancy Option Kit
Quick Specs:
- SNAP PAC Redundancy Option Kit
The SNAP PAC Redundancy Option Kit includes the hardware and documentation you need to develop a control system with redundant controllers. Such a system provides an increased level of reliability that can survive single points of failure and improve your system’s mean time between failures (MTBF).
The kit includes a SNAP-PAC-SRA arbiter, a SNAP-RPSW redundant power switch, and the SNAP PAC Redundancy Option User’s Guide, form 1831. You will also need the following:
- Two identical SNAP PAC S-series controllers
- PAC Project Professional 9.0 or newer
Specifications:
SNAP-PAC-SRA
|
Power Requirements |
8 – 32 VDC, 4 W |
|
Memory |
16 MB RAM |
|
Backup battery for real-time clock |
Rechargeable (recharges whenever the arbiter has power). 5-year life when power is off. |
|
Environmental |
-0 °C to 60 °C |
|
Wired Ethernet Network Interface |
IEEE 802.3 network, 10Base-T and 100Base-TX. Automatic MDC/MDI-X crossover (Ethernet crossover cable not required for direct connection to PC). |
|
Maximum Ethernet Segment Length |
100 meters with Category 5 or superior UTP |
|
Serial Interfaces (2) |
RS-485 twisted pair(s), with shield |
|
Serial Data Rates |
300 baud to 230.4 Kbaud |
SNAP-RPSW
|
Max Switch Volts |
32 VDC |
|
Max Switch Current |
4 amps DC at 70 °C |
|
Operating Range |
VDC |
|
Switch Control (normally closed): |
|
| Off | 8 – 32 VDC (3 mA – 15 mA) |
| On | <= 2 VDC (<0.5 mA). |
