
Models ER-420-AC, ER-420-DC & ER-420-LP
APPENDIX AE: TECHNICAL SPECIFICATIONS
General
Display
Type
High intensity reflective numeric and alphanumeric LCD, UV-resistant
Digits
Seven 17 mm (0 67") and eleven 8 mm (0 31") Various symbols and measuring units
Refresh rate
User definable: 8 to 30/sec
Enclosures
General Control Keys
GRP (glassfiber-reinforced polyamide) enclosure with polycarbonate window, silicone and
EPDM gaskets
UV-stabilized and flame retardant material
Three industrial micro-switch keys UV-stabilized silicone keypad
Field/wall-mount enclosures
Classification Drilling
Dimensions: 130 x 120 x 75 mm (5 10" x 4 72" x 2 95") LxHxD IP67 / NEMA4X
Three 3/4" holes
Operating Temperature
Operational
–30…80° C (–22…178° F)
Power Supply
ER-420-DC
24V AC / DC + 10% Power consumption maximum is 0 5 Watt
ER-420-AC
115…230V AC + 10% Power consumption maximum is 0 5 Watt
ER-420-LP
Output loop powered: 8…30V DC Power consumption maximum is 0 5 Watt
Models DC/AC
The total consumption of the sensors, backlight and outputs may not exceed 400 mA @ 24V
Sensor Excitation
ER-420-LP
3 2V DC for pulse signals
OTEE:
N
This is not a real sensor supply It is suitable only for pulse sensors—like reed
switches—with a very low power consumption
ER-420 AC/DC
3 2, 8 2, 12 and 24V DC Maximum is 400 mA @2 4V DC
Terminal Connections
Type
Removable plug-in terminal strip Wire maximum is 1 5 mm
2
and 2 5 mm
2
Data Protection
Type
EEPROM backup of all setting Backup of running totals every minute
Data retention is at least 10 years
Passcode
Configuration settings can be passcode protected
Environment
Electromagnetic compatibility Compliant ref: EN 61326 (1997), EN 61010-1 (1993)
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March 2013