Dynisco 1290 Bedienungsanleitung
Model 1290 Strain Gage Input Indicator
Installation and Operation Manual
P/N 974066
02/03 Rev. G
ECO # 27622
CONTENTS
Quick Start Instructions ................................................................................................................... 3
1. Indicator Description ................................................................................................................ 5
2. Specifications ........................................................................................................................... 6
3. Installation ................................................................................................................................ 9
4. Setup ...................................................................................................................................... 11
5. Operating Mode ..................................................................................................................... 21
6. Default Data Loading Procedure ............................................................................................. 23
7. Error Messages ........................................................................................................................ 25
8. Repair ..................................................................................................................................... 27
9. Warranty ................................................................................................................................ 27
1290 Strain Gage Input Indicator 3
MODEL 1290 QUICK START INSTRUCTIONS
4 STEPS TO GET UP AND RUNNING.
1. MOUNTING
• Prepare panel cutout to dimensions shown here.
•Remove instrument from case with front panel screw.
•Slide rubber gasket over case.
•Slide case through cutout and slide mounting frame over case rear, engaging the detents in the
case. Use a screwdriver to snug the mounting frame to the panel.
2. WIRING
•Connect wires from cable to terminals as indicated in diagram
•Connect AC power as indicated in diagram.
• If applicable, connect alarm(s). Note that alarm defaults are High, Reverse Acting.
4
3. SCALING
•Insert instrument in case and tighten screw.
•Display will indicate 1290 then CONF.
•Push F key three times. Display will read F.S.U. (Full Scale Value).
•Using the Down arrow key, select the value that matches the full scale of the transducer. Enter
with F key. (If your transducer is 10,000 PSI, no adjustment is necessary.)
•Remove instrument from case and close mode selection switch as shown.
•Reinsert instrument into case and tighten screw.
4. CALIBRATION AND OPERATION
•When power is applied, display will read 1290 then a Pressure reading. At this point, be sure
that no pressure is applied and that the transducer is at operating temperature.
• Press the F key and the legend LO. OFF appears. Using the Up arrow key, advance the legend to
LO.ON.
•Press the F key to initiate zero calibration. After approximately 5 seconds, the legend F.U.S.C.
will appear and alternate with the full-scale value.
• Press the Up arrow key to advance to the legend FU ON. using the F key, initiate the full-scale
calibration. After 5 seconds, the indicator will read 0 ±10.
•The system is now ready for use.
1290 Strain Gage Input Indicator 5
1. INDICATOR DESCRIPTION
The Dynisco Model 1290 Strain Gauge Input Indicator is a flexible, programmable indicator
designed for 350 ohm strain gauge based sensors, such as pressure transducers and load cells. The
five digit, 0.52” LED display provides a precise, readable indication of the measured value.
You can program the 1290 to display in engineering units up to a full scale value (fsv) of 99,900
with an accuracy of ±0.1%. The span value, alarm set points and other constants are stored
indefinitely in non-volatile memory. Easy-to-remember pushbutton sequences simplify transducer
calibration routines.
Two independent SPST alarm relays are another available feature of the 1290. The dual high or low
set points are easily programmed from the front keyboard and are displayed on the digital display.
The low alarms can be set up as low-alarm-masked to inhibit alarm action during startup. Relay
contacts are provided to activate an annunciator or to initiate automatic shutdown if operating
conditions exceed preset limits.
A programmable voltage or current retransmission output is available as an option. You can select a
voltage output of 0-10 VDC or current outputs of 4-20 mA or 0-20 mA to drive chart recorders or
data acquisition equipment
The Model 1290 can also be supplied with bidirectional and half duplex RS-485 serial
communications. All signals are optically isolated and the baud rate is adjustable between 150
19200 baud. The serial communications and analog retransmission output options are mutually
exclusive.
Other features of the 1290 are:
•Apeak reading display (high and low) selected from the front panel
•Adigital filter to reduce the effects of input variations on the display, analog output and alarms
•Input interruption sensing to detect when a transducer or any one of its leads has been
disconnected
•Aprogram lockout feature that disables the front keyboard to prevent un authorized or
accidental changes
•An input signal that can be configured for either resetting the alarms or triggering hold-on-value
•Adigital display that provides operator prompts with messages to show current status or errors
•Acompact, 48mm by 96mm (1.89in. x 3.78 in.), 1/8 DIN enclosure that projects only 144mm
(5.67 in.) behind the panel
6
2. SPECIFICATIONS
2.1 GENERAL
Case PC/ABS, Black
Self-extinguishing, level V-0, per UL 94
Dimensions 48 mm high x 96 mm wide x 144 mm deep
(1.89 in. high x 3.78 in. wide x 5.67 in. deep)
1/8 DIN per DIN 43700
Installation Panel mounted, secured by mounting frame
Cut-out 45 mm high x 92 mm wide, +0.8 mm/-0 mm
(1.77 in. high x 3.62 in. wide, +0.03 in./-0 in.)
Front panel IP 65 protection per IEC 569/CEI 70-1
Rear terminal block 22 screw terminals with safety cover
Display 5 red LED digits, 13.2 mm high
7 segments plus decimal point
Indicators 2 red LEDs for alarm annunciator function
1 red LED for local/remote control
Keyboard Four pushbuttons
Sampling time 100 ms typical
Display update time 400 ms
Common mode rejection ratio 120 dB @ 50/60 Hz
Accuracy ±0.1% fsv ±1 digit @ 25°C
Temperature drift Less than 200ppm/°C of fsv
Insulation resistance Greater than 100 Mohm, per IEC 348
Dielectric strength 1500 V rms, per IEC 348
Power supply Switching 85/264 VAC, 50/60 Hz
(24 VDC ±10% factory order option)
1290 Strain Gage Input Indicator 7
Power consumption 100 mA @ 110 VAC maximum
Protection Internal thermistor
Normal mode 60 dB @ 50/60 Hz
Weight 600g
Operating temperature 0 to 50°C
Storage temperature -20 to +70°C
Humidity 85% relative humidity, non-condensing
2.2 STRAIN GAUGE INPUT
Input 350 ohm bridge
Bridge excitation 10 V +7%
Bridge sensitivity 2 to 4 mV/V
Input signal -25% + 125% of full scale (approx -10 + 50 mV)
Calibration With or without shunt resistor
Shunt value From 40.0% to 100.0%
Zero balance ±25% of fsv
Tare ±25% of fsv
Readout Keyboard programmable from 10 to 99900
Input resolution Adjustable by 1 up to 2010
Adjustable by 10 from 2010 to 20100
Adjustable by 100 from 20100 to 99900
Decimal point may be set in any position
Open input detection On any one of the 4 transducer leads, selectable up or down scale
fault mode.
8
2.3 SPECIAL FEATURES
Display filter First order digital filter on displayed value, with configurable time
constant of 0.4, 1, 2, 3, 4 or 5 seconds
Peak detection Automatic detection of maximum and minimum measured value
Input logic Driven by dry contacts for manual alarm reset or for hold-on value
Watch dog Hardware and software for automatic restart
Protection Internal jumper for calibration and configuration
Parameter protection
Keyboard lockout
2.4 ALARMS
Quantity Two independent alarms
Threshold 0% to 100% of readout span
Resolution and decimal point position as selected per readout
value
Hysteresis Programmable, 0.1% to 9.9% of readout span
Type of alarms High or low thresholds
Direct or reverse (failsafe) action
Automatic or manual reset
Optional low alarm startup masking
Alarm output Two contacts, SPST, NO or NC, jumper selectable
Update time 100 ms
Contact rating 0.6A at 110 Vac resistive load; 0.5A at 220 Vac resistive load; 0.3A
at 110 Vdc inductive load
Filter Optional digital filter with the same time constant chosen for
display filter
2.5 SERIAL COMMUNICATION INTERFACE (OPTION)
Type RS-485, opto-isolated from instrument input and output
Protocol Polling/Selecting, modbUS, jbUS
1290 Strain Gage Input Indicator 9
Baud rate From 150 to 19200 baud
Format 7 bits + parity
8 bits + parity
8 bits without parity
Parity Even/Odd
Stop bit One
2.6 ANALOG RETRANSMISSION (OPTION)
Output types 0-20 mA, 4-20 mA, maximum load, 500 ohms
0-10 V, minimum load 5000 ohms
Keyboard and jumper selectable
Opto-isolated
Scaling From 0 to 99900
Resolution and decimal point position are as selected per readout
value
Output resolution Better than 0.05% of output span (scaling can worsen output
resolution)
Filter It is possible to enable a digital filter on the output with the same
time constant selected for the display filter
Accuracy 0.2% of output span
Temperature drift Less than 100ppm/°C (plus input drift)
Output noise Less than 0.1% fsv RMS
Update time 100 ms
NOTE: The analog retransmission and serial communication interfaces are mutually exclusive.
3. INSTALLATION
3.1 UNPACKING
Inspect the package for shipping damage. If you notice any damage, notify the freight carrier
immediately.
10
3.2 MOUNTING
Fig. 1 Panel Cutout
•Make the instrument panel cut-out with the specified cut-out dimensions.
•Undo the screw (2).
•Remove the unit from the instrument case (3).
• Slide the gasket onto the instrument case (3).
• Slide the the instrument case (3) through the cut-out.
•Slide the mounting frame (4) from the rear over the instrument case (3) so that the snap-in
elements of the mounting frame (4) engage in the recesses at the side.
• Use a screwdriver to snug the mounting frame (4) and the instrument case (3).
•Slide the instrument from the front into the instrument case (3).
•Secure the instrument in the case with the screw (2).
Fig. 2 Side View, Mounting
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