Edwards 4-3LCD — EST4 color touchscreen LCD display configured for EST3 enclosures in retrofit applications.
The standard 4-LCD mounts on the inner door frame of an EST4 cabinet and the 4-LCDLE ships with cabling for 3-CAB and ANN enclosures; the 4-3LCD instead mounts on the user interface layer above the 4-CPU, letting a contractor drop an EST4 CPU into an existing EST3 enclosure and reuse the EST3 UI layer.
- 18-bit color, 640 × 480 pixel resistive touch screen
- Occupies two user interface spaces; mounts on the UI layer above the 4-CPU
- 40 mA standby, 93 mA alarm/active at 24 VDC
- ALARM (red), TROUBLE (yellow), CPU FAIL (yellow) and POWER ON (green) indicators
- 32°F to 120°F (0°C to 49°C); 0–93% RH
Two limits to check first. The 4-3LCD mounts into EST3 enclosures that do not contain audio control components, and it is an EST4 device requiring a 4-CPU — not a display upgrade for a panel still running EST3 processing. The 4-CPU interconnect cable 4-CABL0541 is a separate part number.
