TERWIN µ800P Power Supply / Signal Conditioner Instruction Manual
- June 4, 2024
- TERWIN
Table of Contents
[ ](https://manuals.plus/wp-content/uploads/2022/08/TERWIN-
logo.png)TERWIN µ800P Power Supply / Signal ConditionerIsolated pressure tranducer/Signal Conditioner Model µ800P
You must read the instruction manual before starting up the equipment.
Wairing
The connections must be made with the instrument installed in its final place
of operation. In order to prevent electrical discharges whilst making the
connections, do no t connect the instrument to the relevant supply until after
all other connections have been made.
It is advisable to be guided by the following recommendations wherever
possible:
- Do not connect the instrument to the relevant supply until after all other connections have been made.
- Do not install the instrument near moving parts, contactors or motor starters.
- Endeavour to prevent mechanical vibrations.
- Do not wire the signal lines together with the power lines.
- For the signal lines, it is advisable to use a shielded wire with the earth connection at one single point.
- It is important to check the configuration of the instrument (inputs and outputs) in the event of any problems when starting operation.
Installation or use of the equipment other than specified in this manual may reduce the levels of protection provided in the equipment.
-
CAL (1 of 2)
-
Excitation negative (-) (0V)
-
Excitation positive (+) (9V)
-
CAL (2 of 2)
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Signal negative (-)
-
Signal positive (+)
-
Current output positive (+)
-
Current output negative (-)
-
Voltage output negative (-)
-
Power supply positive (+) (24V)
-
Power supply negative (-) (0V)
-
CAL (1 of 2)
-
Excitation negative (-) (0V)
-
Excitation positive (+) (9V)
-
CAL (2 of 2)
-
Signal negative (-)
-
Signal positive (+)
-
Current output positive (+)
-
Current output negative (-)
-
Voltage output negative (-)
-
Voltage output positive (+)
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Power supply 85-265V 50/60Hz
-
Power supply 85-265V 50/60Hz
OPERATION
Power on the device. During initialisation the LED will flash at a speed of 2 flashes per second. If everything is configured ok, the LED will stay on and the device will begin to work. After initialisation, should there be a hardware or configuration error the LED will flash at 5 flashes per second.
AUTO Zero & 80% TRANSDUCER CALIBRATION
To start the transducer calibration process, press the up button for 5
seconds. The LED will flash at 1 flash per second. During this process, the
instrument will automatically calibrate the transducer zero and 80%. On each
of these steps the output signal will be updated with 0 and 80% of full scale
output. If no errors are encountered during the calibration, the LED will
flash at a rate of 2 times per second and will wait for the user input to
accept calibration. At this time, the output is updated using the new
calibration values. If calibration is correct press the up button to save the
calibration values. If down or no button is pressed for 15 seconds, the device
will return to normal mode without saving new calibration values. If there are
any errors during the calibration routine, the calibration LED will flash at a
rate of 5 flashes per second.
NOTICE:
This manual is supplied as a guide only. All installations should be carried
out by qualified personnel. Terwin Instruments cannot be held responsible for
any errors or omissions contained within.
T:\Terwin Templates\Manuals\μ800P Manual\Terwin μ800P Instruction Manual
(c).docx
©Terwin Instruments Ltd 2011
OUTPUT CONFIGURATION
The output signal type can be chosen by means of a set of switches located
inside the circuit board. Please turn off the power supply, remove the circuit
from its enclosure and select the switches according to the table below. After
selecting the switches in the desired position, the instrument must be powered
up again.
To setup the device, power up and press both up and down buttons for 5
seconds. The led will flash from 1 to 4 times in 1.5 second to show the
present output configuration. Use up/down button to select the desired output
value. Once selected press both up and down buttons for 2 seconds to save the
selection. If no button is pressed for 15 seconds, the device will return to
normal mode (note that switch 1 selects between current and voltage output, so
there are only 4 options in menu selection)
Switches ON|
Output
| Flashes (menu)
---|---|---
1,4,6,8| 0-1V| 1
1,6,8| 1-5V| 2
1,6,8| 0-5V| 3
1,5,8| 0-10V| 4
2,7| 0-20mA| 1
2,7| 4-20mA| 2
7| 0-1mA| 3
3,7| 0-10mA| 4
TECHNICAL SPECIFICATIONS
Power supply | 24V DC or 85-265VAC (depending on the model ordered) |
---|---|
Consumption | 4W |
Ambient Temp. | 0 to 50ºC |
Relative humidity | max. 80% without condensation |
Altitude | max. 2000 m |
Installation cat. | II according to EN61010-1 |
Pollution grade | I according to EN61010-1 |
Box | ABS self-extinguishable |
Dimensions | DC Supply Version |
x 115mm (d)
| AC Supply Version| 35mm (w) x 99mm (h) x
115mm (d)
Input| Pressure transducer 1.5 to 4mV/V
Minimum output change assuming correct output calibration
| 0..1V
0..5V
1..5V
0..10V
0..1mA
0..10mA
0..20mA
4..20mA
| 300 µV
300 µV
300 µV
300 µV
300 nA
300 nA
300 nA
300 nA
Analog output| User-selectable:
0 to 1V, 0 to 5V, 1 to 5V, 0 to 10V, 0 to 1mA, 0 to 10mA, 0 to 20mA, 4 to 20mA
Power supply for pressure transducer
(Excitation)
| 9V DC ( max. 100mA )
Weight| DC Version| 105 grams| AC Supply Version| 185 grams
CE Certification| Safety, EMI Susceptibility, EMI Emission, Harmonics, Voltage
fluctuations
SERVICING
If repairs are required, the instrument should be adequately packed to prevent
damage, with a note describing the observed problems and shipped pre-paid to
your nearest Terwin representative or:-
WARRANTY
Terwin Instruments Limited warrants equipment of its manufacture against
defects in materials and workmanship for a period of one year from date of
despatch. Terwin Instruments Limited’s obligation under warranty is expressly
limited to the repairing or replacing at its factory, or at any authorised
representatives repair station, providing that:
- Terwin Instruments Limited is promptly notified by the buyer upon his/her discovery of a defect.
- The defective equipment is returned, with transportation charges pre-paid by the buyer.
- Providing the defective unit has not been damaged by negligence, improper use or unauthorised repair or alteration.
THIS WARRANTY IS IN LIEU OF ALL OTHER WARRANTIES, EXPRESSED OR IMPLIED,
INCLUDING THE IMPLIED WARRANTY OF FITNESS FOR A PARTICULAR PURPOSE WHETHER TO
THE ORIGINAL PURCHASER OR TO ANY OTHER PERSON. TERWIN INSTRUMENTS LIMITED
SHALL NOT BE LIABLE FOR CONSEQUENTIAL DAMAGE OF ANY KIND.
The aforementioned provisions do not extend the original warranty period of
any article that has been either repaired or replaced by Terwin Instruments
Limited.
Terwin Instruments Limited shall not be bound by any terms, conditions,
representations or warranties, expressed or implied, which are not stated
herein.
NOTICE:
This manual is supplied as a guide only. All installations should be carried
out by qualified personnel. Terwin Instruments cannot be held responsible for
any errors or omissions contained within. T:\Terwin Templates\Manuals\µ800P
Manual\Terwin µ800P Instruction Manual (c).docx
©Terwin Instruments Ltd 2011