ANALOG SCALING MODULE
ASM1
FEATURES
v
v
v
v
v
24V AC operation
Output can sink input’s pull-up voltage
Optional Zero & Span potentiometers
Small size 1.10" by 2.19"
Two mounting options
APPLICATIONS
v
v
v
Analog 0 to 5V DC & 0 to 10V DC scaling
Rescale non - standard sensors
Rescale non - standard voltages
DESCRIPTION
The ASM1 was designed as an analog signal scaling
module to rescale control voltages or sensor signals to
meet the input requirements of the various controllers. The
ASM1 will also allow you to use existing sensors and scale
the ASM1's output to match your controller’s input
requirement. The ASM1's output can sink the controllers
input pull-up voltage on the application inputs. The ASM1
can be factory calibrated to your specific signal
requirements. It can be snap - track mounted for panel use
or be potted with detachable terminal block for field use.
SPECIFICATIONS
SIZE:
1.10" L x 2.19" W x 0.75" H
MOUNTING:
2.187" RDI snap-track (supplied) or
2"L x 1"W Double sided foam tape
POWER:
24V AC, 610%, 50/60Hz, 0.6VA
INPUT:
0 to 5V DC, 0 to 10V DC,
4 to 20 mA
Temperature sensors: RTD’S,
AD590 or 92, Staefa sensors.
Actuator feedback potentiometers
OPERATION
The ASM1 uses a halfwave rectifier for 24V AC power input,
with terminal 2 being common for the power supply, input
common and output common. The input can be factory
configured for voltage, current, or sensor signals either
requiring a pull-up voltage or a load resistance. The signal
then passes through two op-amp stages where it is scaled
to the desired output signal.
INPUT IMPEDANCE: Voltages
4 to 20mA
Sensors
/ 100KV
/ 61.9V
/ 100KV
ACTION:
Dir. with 2 Hz filtering.
OUTPUT:
0 to 5V DC - Standard
0 to 10V DC - Standard
Sensor voltages - Custom
Voltage load 1kV minimum
ADJUSTMENTS:
ZERO & SPAN 6 20%
AMBIENT TEMP:
0 to 508 C.
WIRING CONFIGURATION
ATKINSON ELECTRONICS, INC.
14 West Vine Street
Distributed by:
Murray, UT 84107
Phone (801) 262-6400, 1-800-261-3602
Fax (801) 261-3796, E-MAIL: cbdaei@atkinsonel.com
REV 5/02
ANALOG SCALING MODULE
ORDERING INFORMATION
ASM1
PHYSICAL CONFIGURATION
ASM1/XXX/XXX/X/X (XX-XX)
Temp or Resistance
Mounting Option Code
Sensor Reference Option Code
Output Option Code
Input Option Code
INPUT CODE OPTIONS
mA
5V
10V
VDC
OHMS
AD590
-
RTD-100
RTD-1K
RTD-2K
-
4 to 20mA non-isolated with 62V load.
0 to 5V DC Analog voltage.
0 to 10V DC Analog voltage.
Analog DC voltage (specify).
3 wire potentiometers (specify resistance)
Linear temperature sensor *
(*specify temperature range)
RTD 100V temperature sensor **
RTD 1KV temperature sensors **
RTD 2KV temperature sensors **
(**specify RTD type, temperature coef.
and temperature range)
TYPICAL SENSOR APPLICATION
OUTPUT CODE OPTIONS
5V
10V
VDC
BC-X
BC-15
KLIMO
SM2-T30X
-
0 to 5V DC
0 to 10V DC
DC voltages - specify
3V span starting @ X voltage (3,6,9,12)
1 to 15V DC special (24VDC Regulator)
3.75V to 2.25V DC
T30 Exp (in#0) voltage
MOUNTING CODE OPTIONS
S
P
-
2.187" Snap Track
Potted enclosure double stick foam tape
SENSOR REFERENCE OPTIONS
CALIBRATION ADJUSTMENTS
SA
PI
-
-
Stand alone sensor (pull-up resistor and
reference voltage or load resistor applied
to ASM1's high impedance input)
Parallel input to controller (no pull-up or
load resistor or reference voltage applied to
ASM1's high impedance input).
Output adjustments are made with the ZERO and SPAN
potentiometers on the ASM1.
A clockwise ZERO
adjustment increases the output level and should be made
with a 0% input signal. A clockwise SPAN adjustment
increases the signal differential and should be made with a
100% input signal.
ORDERING CODE EXAMPLES
ASM1/10V/BC6
ASM1/mA /10V
ASM1/270V/10V
ASM1/AD590/10V/P 0-100
ASM1/RTD-1K/5V/S 0-100
ASM1/mA /KLIMO
-
0 to 10V DC input signal, to a 6 to 9V DC output signal ) for Barber Colman-Seibe actuators)
4 to 20mA input signal, to a 0 to 10V DC output signal (for improved 10V input resolution).
0 to 270V feedback potentiometer signal, to a 0 to 10V DC output signal (for feedback status).
AD590 stand-alone sensor (0 to 1008F) signal, to a 0 to 10V DC output signal.
RTD 1KV sensor - paralleled inputs (0-1008F) signal, to a 0 to 5V DC output signal.
4 to 20mA input signal, to a 3.75 to 2.25V DC output signal (for Staefa’s Klimo Controllers).
ATKINSON ELECTRONICS, INC.
14 West Vine Street
Distributed by:
Murray, UT 84107
Phone (801) 262-6400, 1-800-261-3602
Fax (801) 261-3796, E-MAIL: cbdaei@atkinsonel.com
REV 5/02
APPLICATIONS AND INSTALLATION INSTRUCTIONS
ASM1
APPLICATION 1 - VOLTAGE TO VOLTAGE SCALING
The ASM1/10V/BC9 re-scales a 0 to 10V DC signal to 6 to 9V DC to drive a Barber Colman valve or damper actuators. The
ASM1’s output is configured to be adjustable between 0 to 15 DC, with a delta as narrow 2.75V DC. The Zero potentiometer
can adjust level off 0 to 9V DC. The ASM1//BCX versions should be powered from a 24V AC or DC source only.
APPLICATION 2 - 2, 3 WIRE FEEDBACK POTENTIOMETERS TO VOLTAGE CONVERSION
The ASM1/OHMS/10V or VDC interface module can be factory configured for 2 or 3 wire potentiometer (resistance) inputs. A
pull-up resistor is connected between the input and the internal voltage regulator to provide one half of a voltage divider circuit
while the potentiometer provides the second. This application could be used to provide a manual positioning potentiometer or
to read the damper position from a feed back potentiometer and generate an adjustable voltage output.
APPLICATION 3 - 3 WIRE RESISTANCE INPUT TO 0 TO 10 VDC OUTPUT
The ASM1/5K/0-10V interface module is factory configured to accept a potentiometer resistance of 0 to 2500 to 10,000 ohms,
while the ASM1/100/10V interface is configured to accept a potentiometer resistance of 0 to 100 ohms (minimum) to 1000 ohms,
and provide a 0 to 10V DC output signal to drive the MVB or MVL series valves.
Call for other calibration ranges and versions.
If you have a different application or need, please call 1-800-261-3602 and discuss your needs with our Sales Engineers.
ATKINSON ELECTRONICS, INC.
14 West Vine Street
Distributed by:
Murray, UT 84107
Phone (801) 262-6400, 1-800-261-3602
Fax (801) 261-3796, E-MAIL: cbdaei@atkinsonel.com
REV 5/02
APPLICATIONS AND INSTALLATION INSTRUCTIONS
APPLICATION 4 - 4 to 20mA (2 wire) VOLTAGE CONVERSION
ASM1
( DC POWER SOURCE)
The ASM1/mA/VDC interface module is factory configured to accept a 4 to 20mA signal into a 250V load resistor and provide
an adjustable voltage output from a maximum of 0 to 12.5V DC output to a minimum of 0 to 3V DC output. The output level
can be adjusted off the (zero) 0 VDC to a maximum of 6V DC.
APPLICATION 5 - 4 to 20mA (2 wire) VOLTAGE CONVERSION
(AC POWER SOURCE)
The ASM1/mA/VDC/P (potted version) is factory configured to provide +18.5V DC power for the 4 to 20mA transmitter. The 4
to 20mA signal is fed into a 62V load resistor, referenced to common, and provides an adjustable voltage output from 0 to 3V
to 0 to 10V DC.
APPLICATION 6 - 3 WIRE (POSITIVE REFERENCED) 4 to 20mA TRANSMITTER SIGNAL CONVERSION
The ASM1/mA3/VDC//P (potted version) is factory configured to provide +18.5V DC power for 3 wire (positive referenced)
4 to 20mA transmitters. The input has an internal 62V load resistor, referenced to the 18.5V DC supply, as required by
DWYER’s 603 and 606 transmitters. The load resistor produces a .24 to 1.24V signal that is scaled to the desired output signal.
ATKINSON ELECTRONICS, INC.
14 West Vine Street
Distributed by:
Murray, UT 84107
Phone (801) 262-6400, 1-800-261-3602
Fax (801) 261-3796, E-MAIL: cbdaei@atkinsonel.com
REV 5/02
APPLICATIONS AND INSTALLATION INSTRUCTIONS
APPLICATION 7 - 4 to 20mA (4 wire) VOLTAGE CONVERSION
ASM1
(AC POWER SOURCE)
The ASM1/mA/VDC/P (potted version) is factory configured to accept the 4 to 20mA signal from a 4 wire transmitter. The 4 to
20mA signal is fed into a 62V load resistor, referenced to common, and provides an adjustable voltage output from 0 to 3V to
0 to 10V DC.
APPLICATION 8 - TEMP SENSOR CONVERSION
The ASM1/AD59X/10V/0-100/P interface module is factory set up to provide an +15V DC power source for an AD590 or AD592
temperature sensor and receive a 0 to 1008F signal and provide an 0 to 10V DC output. The ASM1 output is scaled for a specific
temperature range allowing other sensors to be used with controllers that have a specific sensor type input.
APPLICATION 9 - TEMP SENSOR CONVERSION
The ASM1/RTD-1K/10V/0-100/S or ASM1/T1/10V/0-100/S interface module is factory set up to receive a 0 to 1008F resistance
signal from a RTD or Staefa’s T1 temperature sensor and provide a voltage output. inputs. The stand-alone version provides
an internal pull-up resistor, while the parallel version has a high input impedance as to not load the existing sensor circuit.
Call for other calibration ranges and versions.
If you have a different application or need, please call 1-800-261-3602 and discuss your needs with our Sales Engineers.
ATKINSON ELECTRONICS, INC.
14 West Vine Street
Distributed by:
Murray, UT 84107
Phone (801) 262-6400, 1-800-261-3602
Fax (801) 261-3796, E-MAIL: cbdaei@atkinsonel.com
REV 5/02
APPLICATIONS AND INSTALLATION INSTRUCTIONS
ASM1
APPLICATION 10 - TEMP SENSOR CONVERSION
The ASM1/RTD-1K/T-30Exp/S or ASM1/T1/5V/39-101/S interface module is factory set up to receive a 39 to 1018F resistance
signal from a RTD or Staefa’s T1 temperature sensor and provide a voltage output. The stand-alone version (/S) provides an
internal pull-up resistor for the sensor. This allows several different type of sensors to be used with the Staefa SM2 controllers.
APPLICATION 11 - TEMP SENSOR CONVERSION
The ASM1/SCS-T30/10V/0-100/S or ASM1/T1/10V/0-100/S interface module is factory set up to receive a 39 to 1018F resistance
signal from Staefa’s T-30 or Staefa’s T1 temperature sensor and provide a voltage output. inputs. The ASM1/// parallel version
has a high input impedance as to not load the existing sensor circuit on the controller.
APPLICATION 12 - 0-10K OHM POTENTIOMETER TO CUSTOM VOLTAGE OUTPUT
The ASM1/10K/CUS/// 1.49-2.93V interface module is factory configured to accept a 0 to 10k Ohm potentiometer and providing
a 1.49 to 2.93 output voltage to drive input #0 on a Staefa controller. The ASM1 is powered from the Aux supply Term. #3,4.
Call for other calibration ranges and versions.
If you have a different application or need, please call 1-800-261-3602 and discuss your needs with our Sales Engineers.
ATKINSON ELECTRONICS, INC.
14 West Vine Street
Distributed by:
Murray, UT 84107
Phone (801) 262-6400, 1-800-261-3602
Fax (801) 261-3796, E-MAIL: cbdaei@atkinsonel.com
REV 5/02
APPLICATIONS AND INSTALLATION INSTRUCTIONS
ASM1
The following Applications are to help avoid ground loop problems between Staefa Klimo controllers, ASM1, and input signal
devices. The Klimo controllers use a Full-wave bridge rectifier, (board common is floating in relationship to the 24V AC). The
ASM1 uses a half-wave rectifier (common is connected to one side of the 24V AC) and should be powered from the ripple voltage
found on terminals 15 & 17 on controllers with an Phase cut output. If the controller does not have a phase cut output an isolation
transformer must be used. DO NOT connect the ASM1 to the 24VAC power that feeds the Klimo controller.
APPLICATION 13 - 0 TO 10 VOLT TO STAEFA KLIMO 3.75 TO 2.25 VOLT SCALING
The ASM1/10V/Klimo re-scales a 0 to 10V DC signal to 3.75 to 2.25V DC signal feed to Staefa Klimo Controller. The Zero &
Span potentiometers allow for field calibration for the various Klimo controllers.
APPLICATION 14 - 4 to 20mA (2 wire) VOLTAGE CONVERSION
(KLIMO POWER SOURCE)
The ASM1/mA/Klimo is factory configured to provide +18.5V DC power for the 4 to 20mA transmitter. The 4 to 20mA signal is
fed into a 62V load resistor, referenced to common, and provides an output voltage from 3.75 to 2.25V DC.
APPLICATION 15 - 4 to 20mA (4 wire) VOLTAGE CONVERSION
(AC/DC POWER SOURCE)
The ASM1/mA/Klimo is factory configured to accept the 4 to 20mA signal from a 4 wire transmitter and is converted to an 3.75
to 2.25V DC output voltage. The 4 to 20mA transmitter is powered either a 24V AC or DC source.
ATKINSON ELECTRONICS, INC.
14 West Vine Street
Distributed by:
Murray, UT 84107
Phone (801) 262-6400, 1-800-261-3602
Fax (801) 261-3796, E-MAIL: cbdaei@atkinsonel.com
REV 5/02