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Q468-0000
ACTIONI/Q
®
Q468
DC Powered AC Input
Signal Isolator
Provides an Isolated DC Output
in Proportion to an AC Input
Eliminates Ground Loops
Field Configurable Input Ranges
Field Configurable Output Ranges
TouchCAL Technology
Description
The Q468 is a DIN rail mount, AC input signal conditioner with
1800VDC isolation between input, output and power. The field
configurable input and output offers flexible, wide ranging capability for scaling, converting or buffering AC inputs ranging from
5mA to 100mAAC or 50mV to 300VAC.
For current inputs above 100mA, it is recommended that an input
shunt resistor be used and the Q468 be configured for the proper
input range. For example, a 5A current transformer output can use
the C006 shunt resistor (0.1 ohm, 5W) with the input of the Q468
set for 0-500mVAC.
The DC output of the Q468 is proportional to the average of the
fully-rectified AC input signal, and is calibrated for sine waves
between 40-400Hz.
TM
TouchCAL
The Q468 utilizes TouchCAL technology which greatly simplifies
calibration. The thermal drift and mechanical variability of the
potentiometers has been removed and replaced with a digitally
stable circuit. Once the unit is configured via DIP switches for
voltage or current, the pushbutton is used to precisely calibrate
the minimum and maximum levels.
To set the input level within the dip switch configured range,
simply apply the high input signal (voltage or current) and push the
CAL button. The low input signal is then applied and pushing the
CAL button again stores the low input signal. The high and low
input levels are stored in nonvolatile memory and correspond to
the high and low output levels. These output levels are precisely
adjusted using the input signal.
TouchCAL technology enables precise calibration and provides more
than 90% offset of the zero value and adjustment down to 10% of the
full scale input span for most of the 16 switch selectable input ranges.
For example, the dipswitch configured 0-200V input range could be
calibrated via pushbutton for 0-80V (i.e. 60% span reduction) or offset
to a range of 120-200V (i.e. 60% offset and 60% span reduction). If the
output was configured for 0-10V, then 120-200V input would
correspond to the 0-10V full scale output. Input ranges such as 180200V or 0-20V are possible using the 0-200V range.
Technology
High Density DIN Rail Mounting
Flexible DC Power Supply Accepts 9 to 30VDC
SnapLocTM Plug-in Terminals
Advanced digital technology combined with Action’s exclusive
ASIC technology allows the Q468 to be field configured for
virtually any AC input to DC output within the limits specified.
Application
The Q468 is useful in applications requiring an isolated, conditioned
DC output from an AC signal. Typical applications include energy
management, load shedding, motor current/load monitoring, locked
rotor detection, isolation and data acquisition. The output of the
Q466 can drive a digital meter for direct display or can interface with
alarm or control devices including PLCs and computers.
Diagnostic LEDS
The Q468 has three diagnostic LEDs. The green (RUN) LED is used
for diagnostics to indicate that power is on. It will flash quickly if
the input signal is above the calibrated range or slowly if the input
signal is below range. It is on continuously when the unit is
functioning within the calibrated range.
The yellow (INPUT) LED is on while calibrating the input level. The
red (OUTPUT) LED is on while calibrating the output level.
Configuration
The Q468 can be configured for input ranges from 50mV to 300V
or 5mA to 100mA, with >90% input offset or it will adjust down
to <10% of full scale input span (except on the 100mV/10mA range
in which maximum offset or gain adjustment is 50%).
Unless a specific custom calibration is specified, the factory
presets the Q468 as follows:
Input Range:
Calibrated Output: 4-20mA
For other I/O ranges, refer to the tables.
0 -500mV
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WARNING: Do not change switch settings with power applied.
Severe damage will result!
1. With power off, snap off the faceplate by lifting the right edge away
from the heatsink. Slide the heatsink forward and off the module.
2. Choose the desired range from Tables 1-3. Return the heatsink to its
original position and attach the faceplate before beginning calibration.
Note: To quit the calibration mode and reset the unit, push and
hold the CAL button for more than 5 seconds. Or, wait for more than
two minutes and the unit will timeout and automatically reset to
the previously stored calibration.
4. When the yellow and green LEDs stop flashing, the yellow and
red LEDs will be on. Push the CAL button momentarily (the yellow
and green LEDs will now be on).
Calibration
For best results, calibration should be performed in the operating
installation, allowing at least one hour for thermal stability of the
system. If pre-calibration on a test bench is preferred, then an
output load equal to the input impedance of the device connected
to the Q468 output is recommended, along with a 1 hour warm up
period.
1. For best results install the module on to a piece of DIN rail or
the I/Q Rail mounting accessories if desired. See the I/Q Rail Data
sheet for details.
Note: An I/QRail is required to power the modules. See ordering
information.
2. Connect the input to a calibrated AC source and the output to
a voltage or current meter. Apply power and allow the system to
reach thermal equilibrium (approx. 20 minutes).
3. Adjust the input signal to the desired maximum and observe that
the green LED is on or flashing. Push the CAL button and hold it
down for more than 5 seconds (until the yellow and Green LEDs
are flashing), then release the button.
Table 1: Input Range Settings
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V05
V001
V002
V003
Table 2: Output Range Settings
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5. Apply the maximum input signal level desired and push the CAL
button to store. The yellow LED will now be on.
6. Apply the minimum input signal level desired and push the CAL
button to store. The green and red LED will now be on.
7. Adjust the input signal while monitoring the output signal until
the output is at the desired maximum level (e.g. 20.00mA), then
push the CAL button to store (the red LED will be on).
8. Adjust the input signal while monitoring the output signal until
the output is at the desired minimum level (e.g. 4.00mA), then push
the CAL button to store (the yellow, green and red LEDs will be on).
9. To finish calibration, push the CAL button once again. The green
LED will be on if the input is within the calibrated range.
Figure 1: Load monitoring using a current
transformer and the Q468
Table 3: Input Type Settings
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Figure 2: Q468 Calibration Flow Chart
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Specifications
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Inputs:
Voltage:
Ranges: 100mVAC to 300VAC
Impedance: >100K ohms
Overvoltage: 330VAC
Current:
Ranges: 10mA to 100mAAC
Impedance: 20 ohms, typical
Overcurrent: 170mAAC
Overvoltage: 60V peak
Frequency Range:
DC to 400Hz, factory calibrated at 60Hz
Common Mode (Input to Ground):
1800VDC, max.
Pushbutton Adjustment:
Effective zero offset: >90%
Effective span turn down: >90% except for 100mV/10mA
range in which 50% is max. zero offset and span turn down
Output:
Voltage:
Output: 0-5V, 0-10V
Source Impedance: <10 ohms
Drive: 10mA, max. (1K ohms, min. @ 10V)
Current:
Output: 0-1mA, 0-20mA, 4-20mA
Source Impedance: >100K ohms
Compliance:
0-1mA; 7.5V, max. (7.5K ohms, max.)
0-20mA; 12V, max. (600 ohms, max.)
4-20mA; 12V, max. (600 ohms, max.)
LED Indication:
RUN (green):
On when unit is powered
flashes at 8Hz when input is 7% above max.
INPUT (yellow):
On while calibrating the input level
OUTPUT (red):
On while calibrating the output level
Ordering Information
Models and Accessories
Specify:
1. Model: Q468-0000
2. Specify optional I/QRail, type and quantity.
3. Optional Factory Custom Calibration, specify C620 - with desired
input and output ranges.
4. Accessories: (see Accessories)
Accuracy (Including Linearity & Hysteresis):
+0.1% of span, typical
+0.5% of span, maximum (100mV range)
Stability:
+0.025%/°C of selected input span, typical.
Response Time (10 to 90%):
250mSec., typical.
Common Mode Rejection:
DC to 60Hz: 120dB
Isolation:
1800VDC between input, output and power.
Humidity (Non-Condensing):
Operating: 15 to 95% @ 45°C
Soak: 90% for 24 hours @ 65°C
Temperature Range:
Operating: 0 to 55°C (32 to 131°F)
Storage: -25 to 70°C (-13 to 158°F)
Power:
Consumption: 1.5W typical, 2.5W max.
Range: 9 to 30VDC
Wire Terminations:
Screw terminals for 12-22 AWG
Shipping Weight:
0.48 lbs.
Agency Approvals:
UL recognized per standard UL508 (File No. E99775).
CSA certified per standard C22.2 No. 0-M91 and 142-M1987
(File No. LR42272-84).
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Accessories
ActionI/Q modules mount on standard TS32 (model MD02) or TS35 (model
MD03) DIN rail. In addition the following accessories are available:
MD02 TS32 DIN rail
MD03 TS35 x 7.5 DIN rail
IQRL-D002 2 Position I/QRail & DIN rail
IQRL-D004 4 Position I/QRail & DIN rail
IQRL-D008 8 Position I/QRail & DIN rail
WV905 24VDC Power Supply (0.5Amp)
H910 24VDC Power Supply (1Amp)
H915 24VDC Power Supply (2.3Amp)
Printed on recycled pape
Action Instruments
Chessell
Eurotherm
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