Precautions
WARNING! All wiring must be performed by a qualified electrician or
instrumentation engineer. See diagram for terminal designations and
wiring examples. Consult factory for assistance.
WARNING! Avoid shock hazards! Turn signal input, output, and
power off before connecting or disconnecting wiring, or removing
or installing module.
Précautions
ATTENTION! Tout le câblage doit être effectué par un électricien
ou ingénieur en instrumentation qualifié. Voir le diagramme pour
désignations des bornes et des exemples de câblage. Consulter
l'usine pour assistance.
ATTENTION! Éviter les risques de choc! Fermez le signal d'entrée,
le signal de sortie et l'alimentation électrique avant de connecter ou
de déconnecter le câblage, ou de retirer ou d'installer le module.
Electrical Connections
This module is factory configured. See the model/serial number
label for thermocouple types, range, and options.
*
Do not make any connections to unused terminals or use them
as wiring junctions for external devices. This may cause permanent
damage to the module!
See wiring diagram at right. Thermocouples must match the types
indicated on the model/serial number label. Use thermocouple
extension wire that matches your T/C types as needed.
The T/C outputs are generally connected to temperature measure-
ment devices that accept the same T/C types. Note that red is
negative for most thermocouples.
Module Power
See model/serial number label to make sure available power
matches module operating voltage. The power supply is fuse
protected and the unit may be returned to us for fuse replacement.
For DC power, either polarity is acceptable, but for consistency,
wire positive (+) to terminal 25 and negative (–) to terminal 28.
Calibration
Input and output ranges are factory pre-configured (at 24°C ±1°C).
Zero and Span potentiometers can be used to calibrate each output
channel as required.
1. It will be necessary to simulate or create a low and a high tem-
perature input to the module and use an accurate measurement
device to calibrate each output.
2. Apply power to the module. Allow 20 minutes for warm up time and
ensure the module is at a stable temperature during calibration.
3. Set the input to your minimum value for the Zero calibration.
4. Using an accurate measurement device for each output, adjust
the Zero potentiometers for the exact minimum output readings
desired. The Zero controls should only be adjusted when the
input signal is at its minimum.
5. Next, set the input at maximum, then adjust the Span pots for
the exact maximum output readings desired. The Span controls
should only be adjusted when the input signal is at its maxi-
mum.
6. Repeat adjustments for maximum accuracy. You may also be
able to fine-tune the outputs by adjusting the calibration of the
devices you have connected to the module outputs.
Optional Alarm Relay
See model/serial number label for the factory configured relay
option codes, if equipped. A red/green bi-color LED is provided to
indication alarm state. It will be green during a non-alarm condition
and red during an alarm condition.
High Alarm (H): The alarm relay changes state when the temperature
exceeds the trip point. The relay resets when the temperature drops below
the reset point. For a high alarm, the trip point is above the reset point.
Low Alarm (L): The alarm relay changes state when the temperature goes
below the trip point. The relay resets when the temperature exceeds the
reset point. For a low alarm the trip point is below the reset point.
HT: Latching alarm with push button reset.
HP: Latching alarm with power-off reset. Module power must be
turned off to reset alarm.
RA: Reverse-acting alarm. Relay coils energized in an alarm condi-
tion. No alarm condition with module power off.
Relay Terminals
See diagram for alarm contact wiring. The module does not provide
power to the relay contacts. Use an appropriate RC snubber for
inductive loads (motors, solenoids, contactors, etc.) to ensure good
relay contact life.
The dual DPST contact sets are in a Form A (NO) and a Form B (NC)
configuration and operate in unison with a single setpoint. They
may be field wired for Form C operation as required.
Set Point Adjustment
This multi-turn potentiometer allows adjustment of the alarm trip
point. This control is adjustable from 0 to 100% of the input range.
Reset Point Adjustment
This multi-turn potentiometer allows adjustment of the alarm reset
point. This control is adjustable from 0 to 100% of the input range.
Sufficient deadband (difference between trip and reset point) should
be used to prevent chattering of the relays or false trips when the
process signal is unstable or changes rapidly.
Alarm Adjustments
Set the input signal to a level that represents the desired set point.
Adjust the Set Point potentiometer to the point at which the relay
changes state from a non-alarm to an alarm condition.
Set the input signal to a level that represents the desired reset point.
Adjust the Reset Point potentiometer to the point at which the relay
changes state from an alarm to an non-alarm condition.
Operate the signal source through the set and reset points to con-
firm desired operation and adjust if necessary.
Relay Test Function
This can be used as a diagnostic aid during initial start-up or
troubleshooting, or as a manual over-ride function. When the front
Relay Test button is depressed or terminals 11 and 12 closed, it
will drive the relay and the bi-color alarm LED to their opposite
states. When released, the relay and LED will return to their prior
states. The Relay Test button also resets the relay on models with
the HT option.
Operation
The APD 41390 accepts a thermocouple input and provides two
thermocouple outputs that are linearized to T/C input temperature.
The green LoopTracker
®
input LED provides a visual indication that
a signal is being sensed by the input circuitry of the module. It also
indicates the input signal strength by changing in intensity as the
process changes from minimum to maximum.
If the LED fails to illuminate, or fails to change in intensity as the
process changes, check the module power or signal input wiring.
Note that it may be difficult to see the LED under bright lighting
conditions.
Yellow LED Functions
Normal operation:
Off
Operational error:
Blinking 2 digit code
If an error occurs during operation, the yellow Status LED blinks an
error code. Check sensor, wiring, or consult factory.
1 1 Analog-digital converter out-of-range
1 2 Sensor under range
1 3 Sensor over range
1 4 CJC sensor abnormal range
1 5 CJC failure
1 6 Hard ADC out-of-range
1 7 Sensor hard fault, open circuit,
hard ADC fault, or hard CJC fault
Instructions
APD 41390
Not used
api-usa.com
1220 American Way Libertyville, IL 60048
Phone:
800-942-0315
Fax: 800-949-7502
A
A
BSOLUTE
BSOLUTE
P
P
ROCESS
ROCESS
I
I
NSTRUMENTS
NSTRUMENTS
API maintains a constant effort to upgrade and improve its products.
Specifications are subject to change without notice. See api-usa.com for
latest product information. Consult factory for your specific requirements.
WARNING:
This product can expose you to chemicals includ-
ing nickel, which are known to the State of California to cause
cancer or birth defects or other reproductive harm. For more
information go to www.P65Warnings.ca.gov
* Do not make
connections to
unused terminals!
Mounting to a DIN Rail
Install module vertically on a 35 mm DIN rail in a protective enclo-
sure away from heat sources. Do not block air flow. Allow 1" (25
mm) above and below housing vents for air circulation.
1. Tilt front of module down and position the
lower spring clips against the bottom edge of
DIN rail.
2. Push front of module upward until upper
mount snaps into place.
Removal
Avoid shock hazards! Turn signal input, out-
puts, and power off.
1. Push up on bottom back of module.
2. Tilt front of module downward to release
upper mount from top edge of DIN rail.
3. Remove module from the DIN rail.
Spring Clips
Upper Mount
–
+
T/C
Meter 1
14
13
15 16
10
9
11 12
To maintain full isolation avoid combining power supplies
in common with inputs, outputs, or unit power.
Cu 60/75°C
conductors
14 AWG
max.
+
–
T/C
Meter 2
22
21
23 24
* Do
not make
connections
to unused
terminals!
Optional alarm contacts
Input
2
1
3
4
Form A
NO
Form B
NC
25 26
25 26
27
28
28
11 2 3 4
2 3 4
5
6 7 8
17 18
19
19 20
20
9 10
9 10 11 12
11 12 13 14
13 14
15 16
21 22
23
23 24
24
29 30 31 32
Power
6
5
7
8
Thermocouple Input
ANSI/ASTM T/Cs use
red
for
negative
30
29
31 32
+
–
18
17
19 20
Power
AC or
DC –
26
25
27
28
Power
AC or
DC +
Earth
Ground
Not used for this version
Not used for this version
* Do not make connections any to unused terminals!
Customer supplied
contact for optional
alarm test/reset
T/C output 1
T/C output 2
Output 2
Output 2
Output 1
Output 1
Optional
alarm
contacts
Contact for
optional alarm
test/reset
Not used
Shown
with
alarm
option
Thermocouple outputs do not feature Output LoopTracker LEDs or
Output Test 1 or Test 1 buttons
Wire terminal
torque
0.5 to 0.6 Nm
or
4.4 to 5.3 in-lbs
