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F:\data\Pagemaker files\Laurel\ MICRO C
OWNERS MANUAL
4175 SW Research Way, Corvallis, Oregon, 97333
Tel: (541) 757-3158 Fax (541) 757-0858 TABLE OF CONTENTS
1.
INTRODUCTION........................................................................................................PAGE 2
2.
RECEIVING AND UNPACKING ..............................................................................PAGE 3
3.
SAFETY CONSIDERATIONS ..................................................................................PAGE 3
4.
CONNECTOR WIRING INFORMATION ...............................................................PAGE 4
5.
MECHANICAL ASSEMBLY .....................................................................................PAGE 6
6.
PANEL MOUNTING ..................................................................................................PAGE 7
7.
CONNECTORS ..........................................................................................................PAGE 7
8.
OPERATING THE METER ......................................................................................PAGE 8
9.
SETTING MENU LOCKOUTS .................................................................................PAGE 9
10.
SETUP MENU ..........................................................................................................PAGE 10
11.
DUAL CHANNEL SIGNAL CONDITIONER.........................................................PAGE 23
11.1 SETTING JUMPERS FOR INPUT SIGNAL LEVELS ............................PAGE 23
11.2 COMMON JUMPER SETTINGS ...............................................................PAGE 23
11.3 MODES OF OPERATION ..........................................................................PAGE 24
11.4 RATE .............................................................................................................PAGE 24
11.5 PERIOD .........................................................................................................PAGE 26
11.6 TOTAL ...........................................................................................................PAGE 26
11.7 TIME INTERVAL ..........................................................................................PAGE 28
11.8 STOPWATCH ..............................................................................................PAGE 28
11.9 PHASE ANGLE ............................................................................................PAGE 28
12.
V-TO-F SIGNAL CONDITIONER..........................................................................PAGE 29
12.1 SETTING JUMPERS FOR INPUT SIGNAL LEVELS ............................PAGE 29
12.2 RATE .............................................................................................................PAGE 29
12.3 BATCH...........................................................................................................PAGE 29
12.4 RATE AND TOTAL ......................................................................................PAGE 30
12.5 1/RATE ..........................................................................................................PAGE 30
13.
QUADRATURE SIGNAL CONDITIONER ...........................................................PAGE 31
13.1 SETTING JUMPERS FOR INPUT SIGNAL LEVELS ............................PAGE 31
13.2 QUADRATURE DECODING ......................................................................PAGE 32
13.3 ZERO INDEX SETUP .................................................................................PAGE 33
13.4 MECHANICAL ZERO ..................................................................................PAGE 35
13.5 SETUP SUMMARY .....................................................................................PAGE 36
13.6 MANUFACTURERS OF OPTICAL ENCODERS ...................................PAGE 37
13.7 QUADRATURE RATE ................................................................................PAGE 39
14.
DUAL ALARM OUTPUTS ......................................................................................PAGE 40
15.
RS-232 AND RS-485 INTERFACE .......................................................................PAGE 41
16.
ANALOG OUTPUT ..................................................................................................PAGE 43
17.
PARALLEL BCD OUTPUT .....................................................................................PAGE 44
18.
5, 10, AND 24VDC EXCITATION OUTPUTS .....................................................PAGE 45
19.
DIGITAL INPUTS .....................................................................................................PAGE 46
20.
CALIBRATION .........................................................................................................PAGE 47
21.
SPECIFICATIONS ...................................................................................................PAGE 47
22.
GLOSSARY OF TERMS ........................................................................................PAGE 50 1.
INTRODUCTION
The series of panel instruments is a versatile, cost effective solution to a wide variety of
monitoring and control applications. These instruments are easily set to produce an
accurate display of frequency, rate, total, period, time interval, phase, position , flow, etc.
Front panel pushbutton or RS-232/RS-485 setup allows the user to customize the unit for
a specific application. Digital scaling of zero and span provides direct readout in
engineering units. A high stability crystal and digital calibration of all ranges eliminates
drift associated with potentiometers found in non-microcomputer-based meters. The
meter measures the period of the input signal to calculate frequency or rate. This fast
read rate provides an accurate display of peak signal input and quick response in control
applications. Selectable gate time (10ms to 99s) and adaptive filter ensure stable
displayed readings and outputs while responding rapidly to changes of the input signal.
Selective security lockout of the front panel setup protects against accidental changes to
the meter configuration and simplifies use by the operator. The series uses a lightweight,
high-efficiency switching power supply that operates from either AC or DC voltages and
complies with safety regulations. The meter can be powered worldwide without changes
to the supply. An optional low voltage supply operates on 9 to 37 Vdc from batteries or
8 to 28 Vac from sources such as 400 Hz aircraft power. Both supplies have isolated 5,
10, and 24Vdc excitation outputs to power transducers. The NEMA 4 (IP65) 1/8 DIN case
is made of high impact, 94V-0 UL-rated plastic. Mounting is from the front of the panel and
requires less than 110 mm behind the panel. All wiring is by removable plugs conforming
to IEC950 safety standards. All output options are isolated from meter and power ground
by 250 Vac minimum.
The dual setpoints have two form C ( 10 A @ 250 Vac ) relays or open collector outputs
for alarm and control capabilities. Either setpoint may be latching or nonlatching and may
be separately configured to be energized above or below the setpoint or in a fail-safe
mode. Outputs may also be selected to operate from the filtered signal to reduce relay
chatter or from the unfiltered signal for fast response. Snubber circuits and program-
mable relay switching time delay extend relay contact life.
Isolation of the 4 to 20 mA and 0 to +10 V analog outputs eliminates ground loop problems.
The output may be scaled by front panel pushbuttons or RS-232/RS-485. For square root
and custom curves, the output is linearized. Depending on the application, the analog
output may be selected to operate from the filtered or unfiltered signal input. The 4 to 20
mA output will drive up to an 800 Ohm load with 16 V compliance
The meter offers RS-232 or RS-485 bidirectional communications or parallel, 3-state
BCD output to interface with computers, PLCs or other digital devices. IBM PC
compatible software is available for programming of the unit by the RS-232 and RS-485
interfaces.
-2- 2.
RECEIVING AND UNPACKING
Your meter was carefully tested and inspected prior to shipment. Should the meter be damaged
in shipment, notify the freight carrier immediately. In the event the meter is not configured as
ordered or the unit is inoperable, return the unit to the place of purchase for repair or
replacement. Please include a detailed description of the problem.
3.
SAFETY CONSIDERATIONS
Warning
: The use of this equipment in a manner other than specified may impair the
protection of the device and subject the user to a hazard.
Visually inspect the unit for signs of damage. If the unit is damaged, do not attempt to
operate.
This unit must be powered with AC ( mains ) from 85 to 264 Vac (90 to 370 Vdc) with the high
voltage power supply option or 8 to 28 Vac (9 to 37 Vdc) with the low voltage power supply
option. Verify that the proper power option is installed for the power to be used.
This meter has no AC ( mains ) switch; it will be in operation as soon as power is connected.
Caution: The 85 to 264 Vac (90 to 370 Vdc) mains connector (J1 Pins 1-3) is color coded
Light Blue to differentiate it from other input and output connectors. The 8 to 28 Vac (9 to
37 Vdc) mains connector is not color coded because these voltages are not considered
hazardous.
Do not make signal wiring changes or connections when power is applied to the instrument.
Make signal connections before power is applied and, if reconnection is required,