KEP MINItrol Ratemeter/Totalizer Datasheet

KEP MINItrol Ratemeter/Totalizer Datasheet
MRT (MINITROL)
Low Cost, Pulse Input
Totalizer/Ratemeter
Features
• Separate Scaling Factors For A & B Inputs
• Display Rate & Total
• Pulse Input - 10 kHz Max.
• RS422/RS232 Serial Communication (optional)
Flow Instruments
RATEMETERS/TOTALIZERS
• Modbus RTU RS422/RS485/RS232 (optional)
• NEMA 4X / IP65 Front Panel
• Separate Add/Subtract Simultaneous Inputs
• Quadrature and Up/Down Direction Control
Inputs (optional)
• 4-20mA or 0-20mA Analog Output (optional)
• 30mV Magnetic Pickup Inputs (optional)
• CSA Listed
Application:
Any rate, total or blending application where 2 preset alarms
and scaling are required.
Specifications:
Display: 6 digit, 0.55" High LED
Input Power:
110 VAC ± 15% or 12 to 15 VDC
220 VAC ± 15% or 12 to 15 VDC
24VAC ± 15% or 12 to 15 VDC
Current: 250 mA DC max. or 6.5 VA AC
Output Power: (AC powered units only)
+12 VDC @ 50 mA, unregulated -10 + 50%
Temperature:
Operating:
+32°F (0°C) to +130 F (+54°C)
Storage:
-40 F (-40°C) to +200°F (93°C)
Humidity: 0-90% Noncondensing
Memory: EEPROM stores data for 10 years if power is lost.
Inputs:
3:
High Impedance DC pulse input 4-30 VDC (high),
Open or 0-1 VDC (low), 10 KΩ imp. 10 kHz max.
speed. Accepts simultaneous inputs.
3M: Mag. Input, Input A only, accepts 30mV input (50 V
max. P/P) signals 10 KΩ imp. 5 kHz max. (Input B, 430V)
3MB: Mag. Input, Inputs A & B, accepts 30mV input (50 V
max. P/P) signals 10 KΩ imp. 5 kHz max.
5:
4-30 V Count pulses on Input A, 4-30 V Direction
Control input (level) on Input B.
5M: 30 mV Count pulses on Input A (50 V max. P/P) 4-30
V Direction Control input (level) on Input B.
9:
Quadrature, accepts 4-30 V pulses with 90° phase
shift for direction detection.
9MB: Quadrature, accepts 30 mV (50 V max. P/P) pulses
with 90° phase shift for direction detection.
Description:
The MINITROL is a 6 digit totalizer / ratemeter with two
level, 5 digit preset alarm control of total or rate. Inputs A &
B have separate scaling K-factors. The totalizer can be
programmed for “A” subtract “B”, “A” add “B” or A & B as
separate totalizers, with display and control of the “net” total
and rate of "A". The MINITROL is also available in 4 other
versions. MC2: a two preset totalizer with scaling, MR2: a
high/low alarm ratemeter with scaling; The “MC”: a totalizing
counter only, and the “MR”: a rate meter display only. If only
one input is required, the unit will display the total and rate
from that one channel. The MINITROL can accept up to
10,000 pulses per second. It has a 5 digit floating decimal
scale factor allowing total readout in true engineering units
and rate per second, minute or hour.
Input “A” simultaneously drives a ratemeter which can be
programmed to display the basic frequency (rate per second) or factored to show rate per minute or rate per hour.
Simply push the “VIEW” button to see either total or rate
without losing a count. Two separate 5 A relay contacts can
be set to operate at either rate or total presets in a latch or
auto-recycle mode with output timing from 0.1 to 99.9 seconds.
Two control outputs can be assigned to either the totalizer
or ratemeter and can automatically recycle at the batch or
stay latched until reset.
Up to 99 units can communicate to a host computer on a
single RS232 or RS422 loop.
When two inputs are received (A & B), the unit can either
add or subtract the two inputs or display the two inputs as
separate totalizers.
Page 46 • Flow Instruments • F-15
Kessler-Ellis Products • 800-631-2165
Kessler-Ellis Products • 800-631-2165
Ratemeter: Accuracy: 0.01% FS (±1 display digit).
The rate display updates once per second. The rate
meter can be programmed to accept almost any number
of pulses per unit of measurement, sample from 2 to 24
seconds maximum, and auto-range up to 5 digits of significant information. In the “RPS” mode, the ratemeter
displays in units per second, and in the “scale” mode,
units per hour or per minute. The unit will display the rate
of the A Input only.
Totalizer: The two 6-digit totalizers can count at 10 kHz
max. Each can have a 5-digit dividing scale factor. The
totalizer advances on the positive edge of each pulse.
Count up or down modes available, as are quadrature
inputs from encoders for position or flow measurement.
The unit can be programmed to view the net value of
"A+B" or "A-B", or A and B as separate totalizers.
RS232/RS422 with KEP Protocol:
If the serial interface option is supplied, multiple units can
be linked together. (The terminal addressing the unit must
be capable of driving all loads in the loop.) Unit status and
new set points can be communicated by serial communication. Mode changes, however, must always be made on
the front panel.
Data is received and transmitted over standard EIA RS232
or RS422 levels. Unit number, baud rate and parity are
entered in the “Program Setting” set up mode and remain
in memory even if power is off.
RS232/RS422/RS485 with Modbus RTU Protocol:
The serial port can be used for serial printing or also for
data acquisition. The unit can assign addresses up to 247
units (The terminal addressing the unit must be capable of
driving all loads in the loop.) The unit can communicate
with a master device through a Modbus-RTU protocol. The
data given for each parameter is in IEEE float format
comprising of 2 words. The unit can be connected in a
network.
Device ID: 01-247
Baud Rates: 300, 600, 1200, 2400, 4800, 9600
Parity: None, Odd, Even
Protocol: Modbus RTU (Half Duplex)
F-15 • Flow Instruments • Page 47
Flow Instruments
RATEMETERS/TOTALIZERS
Approvals: CSA File# LR91109-7, CE Compliant
Reset:
Front Panel:
Resets displayed value and control output
Remote:
4-30 VDC (75 - 240 V AC/DC, Input 8) negative edge
resets Totalizer "A" and control output
Control Outputs:
Relays:
2 each N.O. Relay; 5 Amps 120/240 VAC or 28 VDC.
(N.C. relay contacts and NPN transistor output
available with solder jumpers. Transistor output is
internally pulled up to 10 VDC through relay coil, sinks
from 10 VDC to .5 V @ 100 mA)
Analog Output:
An optional 4-20mA (0-20mA) output is available for
the Minitrol series. The output can be programmed
to track rate or total. This feature is available by
adding suffix A to the part number. Connections are
via a 2 terminal pluggable screw connector.
Programming is accomplished by using the front panel
in conjunction with rear dip switches.
Accuracy: ±.25% FS worst case.
Compliance Voltage: 3 to 30 VDC non inductive.
Scaling Factor (K-Factor): In the standard unit, a user
programmable K-Factor is used to convert the input pulses
to engineering units. The 5 digit K-Factor dividers, with
decimal keyed into any position, allow easy direct entry of
any K-Factor from 0.0001 to 99999. Separate factors may
be entered for the 2 separate input channels.
Presets: Two control outputs are provided. To set relay
values, press “menu” button until “Relay” appears on the
display, the A and B outputs can be assigned to the ratemeter (high/low), one preset for rate and one for total, or two
presets on the A and B totalizers. A 5 digit value can be
entered for both presets and the decimal point location is
the same as the counter. The outputs can be set to
energize from 0.1 to 99.9 seconds or latch (0.0). If a value
other than 0.0 is entered, the totalizers will auto reset at
the preset . In the A-B or A+B versions, the relays will be
assigned to either net total or A rate.
Lockout: Unauthorized front panel changes can be prevented by entering a user selected 5 digit code in the
“LOC” mode. The front panel can be completely locked
out or the presets can remain accessible.
Mounting:
3.925
(99.7)
4.245
(107.8)
0.587
(14.91)
4.437
(112.7)
3.622
(92)
2.625
(66.68)
1.772
(45)
CUSTOMER PANEL
Panel Thickness 0.062" (1.5)
to 0.187" (4.7) max.
Termination:
Ordering Information
13- V+
14- I SINK
B
SWITCH
1 2 3 4
ANALOG
OUTPUT
A
1- COMMON
2- N.O.(N.C./NPN)
3- COMMON
4- N.O.(N.C./NPN)
5- A INPUT
6- B INPUT
7- 12VDC OUT/+DC IN
8- -DC (GROUND)
9- RESET INPUT
10- NOT USED
11- A.C. INPUT
12- A.C. INPUT
RELAYS
Flow Instruments
RATEMETERS/TOTALIZERS
BEZEL
GASKET
OFF
ON
RUN
CAL.
4-20mA 0-20mA
RATE COUNT
RUN
SET
ON
Example:
MRT
A
3
1
Series:
MRT= 6 digits, ratemeter/totalizer
with presets and scaling.
MC2= 6 digits, totalizer only with
presets and scaling.
MR2= 5 digits, rate only with
presets and scaling.
Operating Voltage:
A= 110 VAC ± 15% or 12 to 15 VDC
B= 220 VAC ± 15% or 12 to 15 VDC
C= 24 VAC ± 15% or 12 to 15 VDC
Count Inputs:
3=
Standard, 4-30 VDC simultaneous inputs.
3M = Mag. Input, Input A only, 30mV input
(Input B, 4-30V)
3MB = Mag. Input, Inputs A & B, 30mV input
5=
4-30 V pulses on Input A,
4-30 V Direction Control input on Input B.
5M = 30 mV pulses on Input A,
4-30 V Direction Control input on Input B
9=
Quadrature, accepts 4-30 V pulses
9MB = Quadrature, accepts 30 mV pulses (A & B)
Options
1= RS232 Communications
2= RS422 Communications
3= Modbus RTU RS232
4= Modbus RTU RS422/RS485
A= Analog Output (4-20/0-20 mA)
NOTE: RS232/RS422/RS485 & Analog Output options can not be
combined
Accessories
Separate non keyboard panel order #34235
Separate keyboard panel - order #34234
NEMA4 wall mount enclosure available, see NEMAtrol
Explosion proof enclosure available, see XHV
Serial printer available, see P1000, P295
Ethernet Port Server available, see IEPS
RS-422/485 to RS-232 Communication Adaptor available, see CA285
Modbus DDE/OPC Server available, see KEPserver
Page 48 • Flow Instruments • F-15
Kessler-Ellis Products • 800-631-2165
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