Eurotherm AP4300 Data Sheet

Action Pak

®

DC-Input Isolating Signal Conditioner

Model AP4300

Provides a Fully Isolated DC output in
Proportion to a DC Input

• Protects Equipment with 600V Input to
Output Isolation

• Voltage or Current Input

• Eliminates Ground Loops

• Easy Plug-in Installation/Low Mean-Time-to-

Repair

• AC Line Powered (DC Optional)

• UL Recognized

• CSA Certified

• Three-Year Warranty

APPLICATION

Model AP4300 is useful in eliminat­ing ground loop problems in
existing systems, and is a preven­tive measure in the design of new
systems. The DC input/output
isolation allows a difference in
potential of up to 600V between the
input and output ground. This
allows the benefits of grounded
inputs to be realized, without
creating ground loops.

For wide ranging DC isolating
signal conditioners offering field
configurable input, ouput, ranges
and functions refer to Action
Instruments' Models AP4380 and
AP4390.

OPERATION

The DC input is amplified and
filtered before being fed to a
comparator. The comparator, in
conjunction with a precision-ramp
generator, outputs a duty-cycle
which in turn drives an optical
isolator. The photo-isolator accu­rately reproduces the duty-cycle
and provides an isolated signal.

The isolated duty-cycle is then
converted back to a DC level
proportional to the input. The DC
signal is then buffered by an output
stage which allows zero and span
adjustments. In units having a
current output (e.g. 4-20mA) the
output is a constant current source,
controlled by the output buffer
stage. With voltage output units
(e.g. 0-10V) the output is taken
directly form the discrete driver
transistor of the buffer stage. The
internal power supplies for the input
and output circuitry use indepen­dent transformer secondaries to
maintain isolation.

OPTIONS

CS Canadian Standards

Association Certification
(standard power only,
consult factory).

U Urethane coating of internal
circuitry for protection from

corrosive atmospheres

UL UL Recognition.

CALIBRATION

Top-accessed screwdriver adjust­ments provide typical ±10% zero
and span adjustability. Calibration
is referred to input in that adjust­ments are to correct for input/
sensor variations. Zero is adjusted
for the specified minimum output
with the input at the desired mini­mum. Span is adjusted for the
specified maximum output with the
input at the desired maximum.
Repeat adjustments for maximum
accuracy.

Input/Output Ranges

Table 1:AP4300 Standard Inputs

0-10V 4-20mA

Table 2: AP4300 Standard Outputs

0-10V 4-20mA

Table 3: AP4300 Input/Output Limits

Input

Min. Span Min. Span Max. Input Max. Input
Voltage (Current) (Voltage) (Current)

50mV 1mA 250V 1A

Output

Min. Span Min. Span Max. Output Max. Output

Voltage (Current) (Voltage) (Current)

100mV 1mA 10V 50mA

SPECIFICATIONS

Input Impedance

Voltage Input

> 200KΩ

Current Input

10Ω, 200mV shunt (F.S.)

Output Impedance

Voltage Output

< 10Ω

Current Output

> 100kΩ

Accuracy (Including Linearity,
Hysteresis, and Repeatability)

±0.1% of span typical

Response Time

100 mSec. typical

Linearity (best straight line and
linear input)

±0.05% of span typical

Stability

±0.025%/°C typical

MOUNTING

All Action Paks feature plug-in
installation using either molded
socket (M008) or DIN rail (MD08).

ORDERING INFORMATION

Specify:

1. Model: AP4300

2. Input Range (see tables 1,3)

3. Output Range (see tables 2,3)

4. Options: CS, U, UL (see text)

5. Line Power (see specs)
(All power supplies are trans­former-isolated from the internal
circuitry.)

Output Ripple

0.2% of max. span, rms or 2mV
whichever is greater

24VDC power, 0.5% of max.

span, rms or 5mV whichever is
greater

Output Drive

Voltage Output

10mA, max, 1KΩ

minimum load

Current Output

15V compliance @ 20mA,

750Ω maximum load

Common Mode Rejection

60 Hz: >120dB
DC: >100dB

Isolation (Input to Output)

600V DC or peak AC

Temperature Range

Operating: 0 to 60°C (32 to 140°F)
Storage: -20 to 85°C (-4 to 185°F)

33.3

(1.31)

56

73.7

(2.90)

7

812

9.53

(.375)TYP

23.0
(.91)

M008 (Track/Surface)

39.6

(1.56)

43

#6-32 TERMINAL SCREW

3.74 (.15)DIA.

MOUNTING HOLE

CHANNEL TRACK

(4 INCH LENGTH)

Power

Consumption: 3W typical, 5W

max.

Standard: 120VAC (±10%, 50-

400Hz)

Available: 100, 220, 240VAC,

(±10%, 50-400Hz)

Optional: 24VDC (±8V, inverter-

isolated)

PIN CONNECTIONS

AP4300

1 AC Power (Hot)
2 Shield (Gnd)
3 AC Power (Neu)
4 No Connection
5 Input (+)
6 Input (-)
7 Output (+)
8 Output (-)
DC Power: pin 1= (+); pin3 = (-)

DIMENSIONS

Dimensions are in Millimeters (Inches)

Retaining Spring
Available: Model M801

MD08 (DIN)

All prices and specifications subject to change without notice