A/AFP#4 | ANALOG TO FLOATING POINT | Johnson Controls

ANALOG TO FLOATING POINT

Description

The AFP allows an analog input signal to control a floating point actuator. The AFP converts an analog signal into two relay contact outputs (one increase/one decrease). The AFP's isolated floating point output can be controlled by any one of eight analog input signal ranges (using an offset jumper).

On a loss of power, the AFP's output relays will be open and no signal will be generated. The actuator will remain at the last commanded position unless it has "spring return".

An LED indicates power to the AFP. Its output rate of change (nine ranges, in four versions) is DIP switch selectable. In Version 4, the AFP relays stay on at minimum and maximum voltage. In Version 5, The AFP relays stays on with 5% of maximum or minimum input voltage. No overshoot on maximum or minimum input voltage.

Specifications

Supply Voltage 24VDC or 24VAC, +/- 10%, 50 or 60 Hz
Supply Current 105mA max w/o 24VDC auxiliary output 190mA max w/ 24VDC auxiliary output
Input Ranges (Jumper Selectable) 0-5VDC, 0-15VDC, 0-10VDC, 0-20mA
Input Ranges with Offset Jumper 1-5VDC, 3-15VDC, 2-10VDC, 4-20mA
Input Impedances (Nominal) Voltage/ 10,000Ω nominal; Current/ 250Ω nominal
Output: Floating Point Two relay contact outputs (Increase/Decrease)
Relay Contact Ratings Form C 2 amps max. @24V
Output Accuracy 2% Full Scale @ 32 to 120^oF
Operating Temp/RH 32 to 120^oF (0 to 48.9^oC) / 10 to 95% non condensing
Approvals RoHS

Attributes

• 8 selectable analog input signal ranges (Voltage/ Current)
• Floating point output (Two Relay Contacts)
• DIP switch selectable rates of change (10 ranges available)
• Custom rates of change available
• Electrically isolated output
• Power (LED) indicator
• No wrap around
• Manual override
• Snap track included

Applications

• Electric actuator control