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Series-AN2
8-Input Alarm Annunciator with Audible/Visible Alerts
- Includes integral 24 VDC power supply to power most switches
- Can be set to any common ISA sequences
Product Overview
- Control Output Relay
- Housing Material Plastic
- Input Note NO or NC switches, open collector transistor (open circuit voltage = 3.3 VDC); Logic Levels: LO = 0-0.9 VDC, HI = 2.4-28 VDC (100 KΩ input impedance)
- Input Type NO or NC Switches
- Mounting 1/8 DIN
- Operating Temperature, Max 149 °F
- Operating Temperature, Min -40 °F
- Output Detail Two SPDT relay (3 A @ 250 VAC or 30 VDC, resistive; 1/14 HP @ 125/250 VAC, inductive)
- Power Consumption 20 W
- Power Consumption Note 20 W (6 W on low voltage models)
- Series ID Series-AN2
- Switch Rating 3 A @ 250 Vac or 30 Vdc
- Switch Type (2) SPDT
- Weight 9.6 oz
Supported Applications
The Dwyer Series AN2 Indicating Alarm Annunciator provides visible and audible alerts for monitoring up to eight discrete inputs. The series is designed for panel-mounted applications in industrial control environments, including water and wastewater panels, tank level monitoring, and temperature monitoring processes.
- 4-channel (AN24) or 8-channel (AN28) alarm indication
- Audible alerts via built-in internal horn
- Visual status with red LED channel indicators and green power indicator
Operating Conditions & Performance
The Series AN2 operates within an ambient temperature range of -40 to 65°C (-40 to 149°F) and a storage temperature range of -40 to 85°C. The unit is rated for relative humidity from 0 to 90% non-condensing.
- Enclosure: NEMA 4X, IP65 front (IP66 per data sheet)
- Housing Material: High impact plastic, UL 94V-0
- Response Time: 41 ms following alarm state; 1 ms for alarm state clear
- Noise Filter: 40 ms debounce on inputs
Configuration Options
The series supports multiple input types and power configurations to accommodate diverse control panel requirements. Models are available in two channel counts (AN24 for 4 channels, AN28 for 8 channels) with selectable power supplies.
Input Types
- NO or NC switches: No external excitation required
- Open collector transistor (NPN): Open circuit voltage approximately 3.3 VDC
- Logic Levels: LOW = 0 to 0.9 VDC, HIGH = 2.4 to 28 VDC
Power Supply Options
- AN2x-1 Models: 85-265 VAC (includes isolated 24 VDC @ 200 mA transmitter power supply)
- AN2x-2 Models: 12-36 VDC or 12-24 VAC
Outputs & Sequences
- Relay Outputs: Two SPDT (Form C) relays rated at 3 A @ 30 VDC or 3 A @ 250 VAC resistive load; 1/14 HP @ 125/250 VAC inductive
- Audible Alert: Built-in internal 85 dB horn with silence pushbutton
- Sequences: Input follower and ISA Sequences A, F1A, F2A, F3A, M, F1M, F2M, and F3M per ISA Standard ISA-18.1-1979 R2004
Key Product Differences
The Series AN2 is differentiated by channel count and power supply type:
- AN24 Models (4 Channel): Features four red LED indicators with custom message label area of 1.25" x .60" (32 mm x 15 mm) for up to 4 lines of text.
- AN28 Models (8 Channel): Features eight red LED indicators with custom message label area of 1.25" x .25" (32 mm x 6 mm) for up to 2 lines of text.
All models include a rear terminal block for electrical connections supporting 12 to 22 AWG wire and require an external UL Recognized fuse rated at 5 A max. The units are UL & C-UL Listed (E160849; 508 Industrial Control Equipment) and CE compliant.
PDFs & Manuals
