| Features | SEL-2522 | SEL-2523 | SEL-2533 | SEL-2506 | SEL-2516 | SEL-2595 |
|---|---|---|---|---|---|---|
| Applications | ||||||
| Local Visual Indication | ||||||
| Remote Visual Indication | ||||||
| Local Audible Indication | ||||||
| Remote Audible Indication | ||||||
| Loudspeaker Messages | ||||||
| Telephone Dial-Out Messages | ||||||
| Local SELogic Control Equations and Time Tagging | ||||||
| Mounting and Labeling | ||||||
| Surface/Wall Mount | ||||||
| Rack Mount | ||||||
| Panel Mount | ||||||
| Projection Panel Mount | ||||||
| User-Defined Slide-In Labels | ||||||
| Inputs, Outputs, and HMI | ||||||
| General-Purpose Digital Inputs | 36 | 42 | 14+ | 8 | 8 | 8 |
| Acknowledge, Reset, Test Digital Inputs | 3 | 6 | 4+ | |||
| General-Purpose Digital Outputs | 1 | 11 | 14+ | 8 | 8 | 8 |
| Alarm Digital Output | 1 | 1 | 1 | 1 | 1 | 1 |
| General Display LEDs/Windows | 36 | 36 | 10 | 8 | 8 | 8 |
| Enabled LED | 1 | 1 | 1 | 1 | 1 | 1 |
| Other Communication/Status LEDs | 5 | 4 | 5 | |||
| Pushbuttons | 3 | 4 | 4 | |||
| Base Serial Ports | 2 | 2 | 1 | 1 | 1 | |
| Optional Multimode Fiber-Optic Serial Port | 1 | 1 | ||||
| Optional Additional EIA-232 or EIA-485 Port | 1 | 1 | ||||
| IRIG-B Time Input | 1 | 1 | ||||
| ISA Annunciation Alarm Sequence Choices | 2 | 8 | 8 | |||
| Serial Communications Protocols | ||||||
| SEL Mirrored Bits Communications | ||||||
| SEL Fast Messages | ||||||
| Send SEL Messenger Points | ||||||
| Receive SEL Messenger Points | ||||||
| Modbus RTU | ||||||
| DNP3 Level 2 Outstation | ||||||
Standard Feature
Model Option