Watlow ASPYRE® AT Power Controllers Specifications

Specifications

Power Bases

• Single-phase, 1 controlled leg

Load Amp Range

•  12A, 24A and 48A options (see derating curves)

SCR and Amperage Rating

• SCCR rating 100.000A up to 480VAC with coordinated fusing

• SCCR rating 10.000A up to 240VAC with recommended

circuit breaker

• Power dissipation: Approximately 1 to 1.2 watts per amp

• Leakage current: 1mA at 25°C

Line and Load Voltage Range

• 100 to 480V

Voltage Frequency

• Automatically compensates for 47 to 63Hz

Controller Operating Supply Voltage

• 24VDC, 6W 6VA per ASPYRE AT unit

• Maximum 10 units powered via terminal screw and

backplane connector

• Use split-rail configuration when more units are required

Voltage and Current Measurement Accuracy

• ±2% of range

Control Modes

• Voltage, voltage squared, current, current squared, power

Output Control Firing Types

• Fixed time-base zero crossing

• Variable time-base zero crossing (burst firing)

• Phase angle

Digital Inputs and Outputs

• Independently user-configurable as input or switched DC

output

• Update rate: 10Hz

• Input type: User-selectable, dc voltage or dry contact

• Input logic: On ≥ 4VDC, off ≤ 1VDC, 30VDC max

• Output voltage: 24V (based on the supply voltage)

• Output: 100mADC max. per channel

Analog Input

• Voltage: 0-10VDC, 15kΩ impedance

• Current: 4 to 20mA, 0 to 20mADC, 100Ω impedance

Analog Output

• 0 to 20mADC ±120μA or 4 to 20mADC into 500Ω max. load

with 30μA nominal resolution

• 0 to 10VDC ±60mV into a 500Ω min. load with 15mV

nominal resolution

Electromechanical Relay Output

• Form C, 5A resistive load

• 100.000 cycles at 24VDC, 120/240 VAC

• 125VA pilot duty 120/240VAC

• 25VA 24VAC/DC