MINItrol-S SERIES
MODELS:
MRT-S
INSTALLATION & OPERATING INSTRUCTIONS
http://www.kep.com
99549 09/21/04
KESSLER-ELLIS PRODUCTS
10 Industrial Way East
Eatontown, NJ 07724
800-631-2165 • 732-935-1320
Fax: 732-935-9344
WARNING
This instrument contains electronic components that are susceptible to damage by static electricity. Proper handling*
procedures must be observed during the removal, installation or handling of internal circuit boards or devices.
*Handling Procedure
1. Power to unit must be removed.
2. Personnel must be grounded, via wrist strap or other safe, suitable means, before any printed circuit board or other
internal device is installed, removed or adjusted.
3. Printed circuit boards must be transported in a conductive bag or other conductive container. Boards must not be
removed from the protective enclosure until the immediate time of installation. Removed boards must be placed immediately in a protective container for transport, storage or return to factory.
Comments:
This instrument is not unique in its content of EDS (electrostatic discharge) sensitive components. Most modern electronic
designs contain components that utilize metal oxide technology (NMOS, CMOS, etc.). Experience has proven that even
small amounts of static electricity can damage or destroy these devices. Damaged components, even though they appear
to function properly, exhibit early failure.
TABLE OF CONTENTS
DESCRIPTION & SPECIFICATIONS ..................................................................... 1
DECODING PART NUMBER..................................................................................2
HOW TO MOUNT THE UNIT..................................................................................3
WIRING GUIDELINES ............................................................................................4
TOTALIZER INHIBIT INPUT ................................................................................... 4
WHAT CAN YOU VIEW ..........................................................................................6
OUTPUT JUMPER SELECTIONS .......................................................................... 6
MILLIVOLT INPUT OPTION JUMPER SELECTIONS............................................6
OPERATING FRONT PANEL ................................................................................. 7
PROGRAMMING FLOW CHART ........................................................................... 7
PROGRAM CODES & DESCRIPTIONS ................................................................ 8
WIRING TERMINATIONS.......................................................................................9
CALCULATING SCALE FACTORS ........................................................................10
PROGRAMMING .................................................................................................... 11
SETTING SCALING FACTORS..............................................................................11
SETTING THE COUNTER......................................................................................12
SETTING THE RATE .............................................................................................. 13
SETTING THE LOCK CODE & LOCKING THE UNIT ............................................14
SETTING THE RELAYS & PRESETS ....................................................................15
OUTPUT WIRING ...................................................................................................16
ANALOG OUTPUT OPTION...................................................................................17
RS232/RS422 SERIAL COMMUNICATIONS ......................................................... 18
TROUBLESHOOTING GUIDE................................................................................21
WARRANTY
THIS PAGE IS BLANK
DESCRIPTION & SPECIFICATIONS
DESCRIPTION:
The Minitrol-S is a single input totalizer/ratemeter. The totalizer
and ratemeter each have their own 5 digit dividing scale factor.
The two 5 AMP preset relay outputs can be programmed by the
user to apply to the “A” total counter or the “A” ratemeter. The user
can view the rate, total and grand total. The B relay can be used to
create a scaled pulse output. Magnetic pickup input, analog output
and RS232 communication options are available.
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
24 VAC ± 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)
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.
3M: Mag. Input, Rate/total input only, accepts 30mV input (50 V
max. P/P) signals 10 KΩ imp. 5 kHz max. (Inhibit input, 430V)
NOTE: The Mag. input has filtering as follows: 30mV trigger level up
to 300Hz , 0.25 V trigger level at 5KHz
RESET:
Front Panel: Resets displayed total value and control output.
Remote: 4-30 VDC negative edge resets total and
relay control output.
NOTE: The remote reset does not reset the grand total.
K FACTOR/SCALING
The K-Factors are 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 rate and total.
CONTROL OUTPUTS:
Relays:
2 each N.O. Relay; 5 Amps120/240 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: ± 0.25% FS
Compliance Voltage: 3 to 30 VDC non inductive.
RS232/RS422 SERIAL INTERFACE
If the serial interface option is supplied, up to 99 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 transmitted at
selected baud rates using standard seven bit ASCII characters and
parity with two additional bits of “Start” and “Stop” to make up the
standard ten bit character.
Data is received and transmitted over standard EIA RS232 or
RS422 levels. Each 10 bit character is made up of a start bit, 7 bit
ASCII code, parity bit and stop bit. Unit number, baud rate and
parity are entered in the “Program Setting” set up mode and remain
in memory even if power is off.
Note that the input impedance of RS232 is 3K or 7K Ohm worst
case. The terminal addressing the unit must be capable of driving
all loads in the loop. RS422 input impedance is much higher and
there is usually no problem driving 25 units. Unit serial transmit line
remains in a high impedance “OFF” state until addressed.
1
SPECIFICATIONS
(continued)
DECODING PART NUMBER
PRESETS
Two control outputs are provided. To set relay A or B's functionality, press “menu” button until “Relay” appears on the display, the A
and B outputs can be assigned to the rate alarm (high/low), or for
total/grand total. A 5 digit value can be entered for both presets A
and B. 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 corresponding
totalizer will auto reset at the preset. This may be used to create a
relay scaled pulse output.
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.
RATEMETER
Accurate to 4 1/2 digits (±1 display digit). The rate meter can be
programmed to:
• accept almost any number of pulses per unit of measurement
• sample from 2 to 24 seconds maximum
• auto-range up to 5 digits of significant information.
The display can be programmed to read in units per Second (
Minute (
TOTALIZER
The two 6-digit totalizers can count at 10kHz speed. They share a
5-digit dividing scale factor. The totalizer advances on the positive
edge of each pulse.
min
), Hour (
hour
), or Day (
day
).
sec
MINItrol-S
Example: MRTS A 3 1 A
Series:
MRTS=6 digits, counter / ratemeter
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, Irate/total input only, 30mV input
(Inhibit input, 4-30V)
Options (Multiple Options Available)
1= RS232 Communications
2= RS422 Communications
A= Analog Output (4-20/0-20 mA)
),
2
HOW TO MOUNT THE UNIT
The unit is designed to be mounted with a gasket providing a water tight seal. Two mounting brackets are provided to
secure the unit to the panel. A panel less than .1" may distort if the clamps are screwed too tightly.
Slide the body of the unit through the rubber gasket. Insert the unit into the panel. As shown in "FIG. A", slide the brackets
up the groove to press against the back of the panel. Insert screws into rear of brackets and tighten them evenly and
alternately. Do not over tighten! A normal level of torque is required. Maximum torque should be 3" pounds.
This product is designed to be panel mounted and is NEMA 4 rated if proper mounting procedures are followed and the
required and supplied hardware is correctly used.
If the panel in which the unit is mounted is less than .125 of an inch thick, the possibility exists that there will be some
flexing. Should this flexing occur, the resulting deformation of the panel could cause a loss of the water tight seal. In case
this should occur, the use of silicone or other sealant would be recommended.
This product is designed to the NEMA 4 rated. However, the fact that we are unable to control either the location in which
the device is installed or the actual installation itself requires that the company's liability shall extend only to the repair or
replacement of a defective product.
We are prepared to offer additional assistance in those special situations where normal mounting methods do not seem to
satisfy the customers needs. This assistance may be obtained by calling the factory and asking for Application Engineering.
DIMENSIONS
3.925
(99.7)
FIG. A
4.437
(112.7)
2.625
(66.68)
0.587
(14.91)
BEZEL
GASKET
4.245
(107.8)
CUSTOMER PANEL
Panel Thickness 0.062" (1.5)
to 0.187" (4.7) max.
3.622
(92)
1.772
(45)
3
WIRING GUIDLINES
The rear terminal contains 12 screw terminals for connecting #14 to #28 gauge wire.
The unit is controlled by a microprocessor and, therefore, an electrically "noisy" environment could cause operating
problems. The input power line should not be common to power lines for motors, pumps, contactors, etc.
The unit is designed to be immune from line or transient voltage interference. In some environments voltage spikes of over
1000 volts can occur. When common to a power line driving motors voltage fluctuations can be extreme and rapid. Lines
driving DC or AC solenoids, relays, or actuators can also cause problems.
Four sources of noise can occur:
1) AC power line noise - If the unit cannot be connected to a clean power source, an inductive load suppressing device
(MOV as GE # V130LA1 or Resistor Capacitor as Paktron # .2 uf/220 ohm @ 400V) can be installed. Although locating
the suppressor across the AC supply at the unit should help, best results are obtained by connecting the suppressor
across the leads of the "load" at the device causing the spike.
2) Input line noise -The noise is carried on the input and D.C. ground lines. Make sure the input wires are never run into
the unit in a bundle with power input lines. Also, keep these input lines isolated from inductive lines from devices
drawing heavy loads. If there is a possibility of electrical noise, we recommend using shielded cable, with the shield
being hooked to the D.C. ground terminal on the instrument, and to "earth" at one point in the circuit, preferably at the
D.C. ground terminal of the unit.
3) Output lines - The unit has two relay outputs. When these outputs are used to run external relays or solenoids, spikes
can be generated upon activation. This noise can spread through the instrument causing operating problems. If the
source is a D.C. operated device, a general purpose diode (IN4004) placed across the solenoid prevents electrical
noise spikes. Connect the cathode (banded side) to the more positive side of the coil. If the source is an A.C. operated
device, use a MOV or Resistor Capacitor across the coil.
4) 12 VDC output supply - Noise can be generated on the 12 VDC output supply if it is used to drive inductive loads or if
the current draw exceeds 50 mA. Insure that all inductive loads have a diode (such as IN4004) across the coil and that
the current does not exceed 50 mA.
TOTALIZER INHIBIT INPUT
In many applications it is sometimes necessary to inhibit totalization while certain operations are present. A high logic level
on this input inhibits totalization while the rate indication is still active. This feature is useful during meter proving and may
be used with liquid phase detectors.
4
CONNECTING AC / DC POWER
NOTE: Connect power only after other connections are finished. Do not touch the live AC power terminals! The unit has
been designed with an isolated AC input. Thus, polarity is not a concern for the AC input. The chassis is plastic, therefore
earth ground is not used. For D.C. operation, connect + 12V to pin 7 and - D.C. to pin 8.
CONNECTING SENSOR INPUTS
These diagrams show how to hook a typical input sensor to the unit. The unit supplies an unregulated 12 Volt (50mA)
output to power these sensors (Pin 7).
A valid pulse is one which makes a transition from the off-state (0 to 1V) to the on-state (4 to 30V): a positive going edge.
The input impedance is 10K Ohms to ground. The unit can be programmed from the front panel for slow switch closure
inputs up to 40Hz (select "Lo CPS"), or solid state switches (select "hi CPS") up to 9.99KHz. No rear terminal jumpers are
required. Use PNP (sourcing) type pulsers.
TYPICAL SENSOR HOOKUP
High Level Pulse Low Level Pulse (Mag Pickup)
Flowmeter
RELAYS
A
B
1 COMMON
2 N.O. (N.C./NPN)
3 COMMON
OUTPUT
POWER
GROUND
4 N.O. (N.C./NPN)
5 A INPUT
6INHIBIT TOTAL INPUT
7 12 V OUTPUT/ + DC INPUT
8 - DC (GROUND)
9 RESET INPUT
10 NOT USED
11 AC INPUT
12 AC INPUT
*
* PULLUP RESISTOR REQUIRED FOR
OPEN COLLECTOR OUTPUTS
4.7KΩ TYPICAL
Flowmeter
with Mag. Pickup
RELAYS
A
B
1 COMMON
2 N.O. (N.C./NPN)
3 COMMON
SIGNAL
GROUND
4 N.O. (N.C./NPN)
5 A INPUT
6INHIBIT TOTAL INPUT
7 12 V OUTPUT/ + DC INPUT
8 - DC (GROUND)
9 RESET INPUT
10 NOT USED
11 AC INPUT
12 AC INPUT
5
WHAT CAN YOU VIEW?
J4
J5
J6
J3
J1
J2
CR1
R3
C8R7R5
R4
U1
CR2
REV
20229
CR6
CR3
U3
P1
R10R6C6
C7
CR4
CR5
C4
R2
R1
C3
C5
U2
U4
U6
U5
R8
R9
C1
C2
C9
B
Pressing VIEW shows:
A) The total of input A. If “reset to 0” is selected A counts up, if “set to preset” is selected A will count down.
B) The rate of input A.
C)* The grand total of input A which always count up.
NOTE:
* All decimal points are inverted when “Grand Total” is being displayed to distinguish from the A total.
OUTPUT JUMPER SELECTIONS
FUNCTION
"A" RELAY
N.C. OUTPUT
"B" RELAY
N.C. OUTPUT
"A" PRESET
*
TRANSISTOR (NPN)
*
"B" PRESET
TRANSISTOR (NPN)
BOTTOM VIEW AT TERMINAL
* The unit must be removed from the case to access jumpers C & F, all
other jumpers can be accessed by removing the plastic extender.
NOTE: All three pads at jumpers 2 and 4 are connected.
12 11 10 9 8 7 6 5 4 3 2 1
L
20192
MODIFICATION
CUT JUMPER
AT "A" "B" TO "2"
CUT JUMPER
AT "D" "E" TO "4"
CUT JUMPER
AT "A" "C" TO "2"
CUT JUMPER
AT "D" "F" TO "4"
FC
H
G
4
DE
AB
2
MILLIVOLT INPUT OPTION
JUMPER SELECTIONS
If the unit has the millivolt input bd.# 20229, The A inputs can be
solder jumper programmed to accept either a low millivolt or 4-30 V
input. The B input should always be set for 4-30 V. Each unit
shipped is programmed according to part number. If solder jumpers are made, the part number should be modified to reflect the
changes made
C=CLOSE, O=OPEN
4-30V INPUT Millivolt INPUT
Input A J1-O, J2-C, J3-O J1-C, J2-O, J3-C
Inhibit Input J4-O, J5-C, J6-O
6
OPERATING THE FRONT PANEL
Press to "reset"
in operating
mode.Press to
"enter" in
programming
mode.
Start Here
PRGM
4
Press to
view or
change
preset B.
3
21
Press to alternately
view A rate, A total
or A grand total.
Press to
enter
lock code for
panel lock.
65
RST
ENTER
LOCK PRE A PRE B VIEW PRGM
Press to
view or
change
preset A.
PROGRAMMING FLOWCHART
Press this key to step through menu choices.
PRGM
RST
ENTER
Press this key to enter displayed value
Press to cycle
through PROGRAM
choices. Press to
toggle between
choices in program
mode.
FACToR
ENTER
DP F A
ENTER
#####
ENTER
DP F B
ENTER
#####
ENTER
RUN MODE
PRGM
CouNT
RST
0
DPLoC
Hi
CPS
RUN MODE
ENTER
PRGM
ENTER
ENTER
PRGM
ENTER
PRGM
RATE
ENTER
sec
min
hour
PRGM PRGM
SET
PR
day
ENTER
NoR ##
Lo
CPS
ENTER
FiguR#
ENTER
dly ##
ENTER
RUN MODE
LoC
ENTER
LC
PRGM
PRg
ENTER
CoDE
#####
ENTER
RUN MODE
A
ToT
RELAY
ENTER
PRGM
PRGM
LC
ENTER ENTER
ALL
A ##.#
ENTER
B
PRGM
ToT
ENTER ENTER
B ##.#
RUN MODE
A
RATE
B
RATE
ENTER
7
The following is a list of abbreviations as they appear on the display and front panel of the unit.
ABBREVIATION DESCRIPTION
FACTOR
DP F A
DP F B
COUNT
RST 0
SET PR
DP LOC
HI CPS
LO CPS
RATE
SCALING FACTOR - Enter the 5 digit dividing scale factor (K-Factor) for the total input (Input A).
DECIMAL POINT FOR FACTOR A (rate) - Enter location of decimal point for the rate scaling factor by
pressing the button under the digit where the decimal is desired.
DECIMAL POINT FOR FACTOR B (total) - Enter location of decimal point for the total scaling factor by
pressing the button under the digit where the decimal is desired.
PORTION OF MENU FOR SETTING TOTALIZER VARIABLES
RESET TO 0 - Totalizer will reset to 0. The totalizer will count up from 0.
SET TO PRESET - Totalizer will reset to preset A. The totalizer will count down from preset A. The grand
totalizer will count up .
DECIMAL POINT LOCATION - Enter desired location of decimal by pushing the button under the digit where
the decimal is desired. Changing the decimal will change the decimal location in the totalizer and grand
totalizer, but not the rate display.
HIGH COUNTS PER SECOND - This sets the unit for high count speeds (0-9.99KHz)
LOW COUNTS PER SECOND – This sets the unit for contact debounce filtering (0-40Hz)
PORTION OF MENU FOR SETTING RATE VARIABLES
sec
min
hour
day
NOR##
FIGUR ##
DLY##
RATE PER SECOND - The display will read in rate per second.
RATE PER MINUTE - The display will read in rate per minute.
RATE PER HOUR - The display will read in rate per hour.
RATE PER DAY- The display will read in rate per day.
NORMALIZING FACTOR - Normalizes (averages) the data being received. Higher settings provide more
normalizing (averaging) for a more stable display. Derived from the equation:
(Old Data x “NOR” + New Data)
(“NOR” + 1)
SIGNIFICANT FIGURE - This sets the amount (1-5) of meaningful figures the unit will display. (RATE DIS
PLAY ONLY). FOR EXAMPLE: If “2” is set as the figure, a rate of 273.45 will be displayed as 270.
DELAY FACTOR - The amount of time (02 to 24 sec.) the unit will “look” for valid data, before the display
defaults to zero. (RATE DISPLAY ONLY)
8
LOC
LOCK - This portion of the menu allows you to:
1) lock the program (presets are still accessible)
2) lock all (presets and program are locked).
LC PRG
LC ALL
CODE
RELAY
A TOT
A RATE
A##.#
B TOT
B RATE
LOCK PROGRAM - This will lock the program and allow the presets to be changed when the unit is in the
lock mode.
LOCK ALL - This will lock the program and the presets when the unit is in the locked mode. The presets can
be viewed, but not changed.
LOCK CODE - This message (code) will flash on display for approximately 3 seconds. It will be followed by a
5 digit number (xxxxx). The number you enter here will be the code to lock and unlock the unit.
RELAY - This portion of the menu allows you to set your relay operation variables.
RELAY A FOR TOTALIZER - When this is selected relay A will activate when the total has reached
Preset A.
RELAY A FOR RATE - When this is selected relay A will activate when the Rate of input A equals or exceeds
preset A.
RELAY A DURATION - This message will appear when “A TOT” is selected. It is the duration which the
relay will remain energized (00.1 to 99.9 sec). If 00.0 is selected, the relay will latch until reset. When the
duration is not at 00.0, the unit will autorecycle.
RELAY B FOR TOTALIZER - When this is selected relay B will activate when the total has reached preset B.
RELAY B FOR RATE - When this is selected relay B will activate when the rate equals or exceeds preset B.
The relay will drop out when the rate falls below preset B.
B##.#
RELAY B DURATION - Follow same procedure as A ##.#.
WIRING TERMINATIONS
ANALOG
1- COMMON
2- N.O.(N.C./NPN)
3- COMMON
4- N.O.(N.C./NPN)
5- RATE / TOTAL INPUT
6- INHIBIT TOTAL INPUT
7- 12VDC OUT/+DC IN
8- -DC (GROUND)
9- RESET INPUT
10- NOT USED
11- A.C. INPUT
12- A.C. INPUT
A
B
SWITCH
RELAYS
ON
13- V+
14- I SINK
OFF
RUN
4-20mA
RATE
RUN
1 2 3 4
OUTPUT
ON
CAL.
0-20mA
TOTAL
SET
Analog Out Setup SwitchesSerial Port
13 14
REAR VIEW
1 2 3 4 5 6 7 8 9 10 11 12
1 2 3 4
ON
9
CALCULATING SCALE FACTORS
There are two separate dividing scale factors, one for rate and one for total. The factors are entered as
the number of pulses per the desired unit of measurement. The factor ranges from 0.0001 to 99999.
Because the “units per second”, “minute”, “hour” or “day” are field programmable from the keypad,
scale factor calculations for the ratemeter are easy.
RATE (Factor A)
The Rate K-Factor value should be entered in pulses per unit of measure. Be sure to choose the
desired Time Base (sec, min, hour, day) in the Rate menu section.
Rate =
Where Time Base:
SEC = 1
MIN = 60
HOUR = 3600
DAY = 86400
TOTAL (Factor B)
The Total K-Factor (Factor B) value should be entered as pulses per least significant digit for display.
The DPLOC (decimal location) under the count section is a "dummy" decimal. Therefore the Total KFactor must be scaled properly for totalizer decimal adjustments.
EXAMPLE:
Flowmeter Output: K = 56.27 pulses per gallon
FACTOR B TO READ
56.27 0 GAL
5.627 0.0 GAL
.5627 0.00 GAL
Input Frequency x Time Base
Factor A
Total = Input Frequency
Factor B
10
PROGRAMMING
STEP
1
SETTING
SCALING
FACTORS
PRESS
PRGM
ENTER
ENTER
ENTER
DISPLAY
factor
dp f a
#####
dp f b
REMARKS
This section of the menu is used to set up
the scaling factors for rate and total.
This sets the decimal for rate factor.
Press the arrow key under the digit where
the decimal is desired. To clear the
decimal, press the arrow key furthest to
the right (PRGM) .
This is the scaling factor for the rate. To
change, press the arrow key under the
digit(s) to change. Press ENTER to enter
the displayed value.
This sets the decimal for total factor.
Press the arrow key under the digit where
the decimal is desired. To clear the
decimal, press the arrow key furthest to
the right (PRGM) .
ENTER
#####
This is the scaling factor for the totalizer.
To change, press the arrow key under
the digit(s) to change. Press ENTER to
enter the displayed value.
11
PRESS DISPLAY REMARKS
STEP
2
SETTING
THE
COUNTER
PRGM
PRGM
ENTER
ENTER
ENTER
factor
count
rst 0
or
set pr
dp loc
hi cps
or
lo cps
This section of the menu sets up the
totalizer information.
Press the PRGM key to choose RST 0
(reset to 0, count up) or SET PR (set to
preset, count down), press the ENTER
key to enter the displayed choice.
This sets the decimal location for the
totalizer and grand totalizer Press the
arrow key under the desired digit location. To clear the decimal, press the
arrow key furthest to the right. Press
the ENTER key to enter the displayed
location.
Press the PRGM key to choose HIGH
CPS (0-9.99KHz) or LOW CPS (040Hz). Press the ENTER key to enter
the displayed choice.
12
STEP
3
SETTING
THE RATE
PRGM
PRGM
REMARKSPRESS DISPLAY
factor
count
PRGM
ENTER
ENTER
ENTER
rate
Sec
min
hour
day
nor #.#
figur #
This section of the menu is used to set up
the rate information.
Press the PRGM key to choose rate time
base.
SEC (rate per second)
MIN(RPM)
HOUR (RPH)
DAY (rate per day)
Press ENTER to enter displayed choice.
This sets the normalizing (averaging) factor. Press the arrow keys under the desired digits to change. Press ENTER to
enter displayed value.
This sets the minimum number of significant figures to be displayed. Press the arrow key under the digit to change. Press
ENTER to enter displayed value.
ENTER
dly ##
This sets the delay time (2 to 24 sec.) that
the unit will “look” for valid input data before the display falls to 0. Press the arrow
key under the digits to change. Press ENTER to enter displayed value.
13
PRESS
DISPLAY REMARKS
STEP
4
SETTING
LOCK
PRGM
PRGM
PRGM
PRGM
ENTER
ENTER
factor
count
rate
loc
LC PrG
or
LC ALL
CoDE
Flashes
followed by:
#####
This section of the menu is used to set up
the lockout type and code.
LC PRG = Locks program but presets and
reset are accessible.
LC ALL= Locks entire keypad.
Press the PRGM button to toggle between
choices; Press ENTER to enter displayed
choice.
After CODE flashes the display will show the
existing lock code. To change the code press
the key under each digit to be changed. Press
ENTER to enter displayed value.
SETTING
THE
LOCK
STATUS
LOCK
ENTER
CoDE
Flashes
followed by:
0
LoC
or
uN LoC
Key in the lock code (see programming step
4) by pressing the keys under the digits to be
changed. Press the ENTER key to enter the
displayed code.
After the code is entered the unit will display
LOC (unit is locked) or UN LOC (unit is unlocked). This message will be displayed for
approximately 3 seconds before the unit returns to the run mode.
14
DISPLAYPRESS
REMARKS
STEP
5
SETTING
THE
RELAYS
THIS SELECTION
WILL ONLY APPEAR
IF "A TOT" IS
CHOSEN
PRGM
PRGM
PRGM
PRGM
PRGM
ENTER
ENTER
ENTER
factor
count
rate
loc
relay
a tot
or
a rate
A ##.#
b tot
or
b rate
This section sets up the relay information.
Press the PRGM key to choose A TOT (A
assigned to total) or A RATE (A assigned to
rate). Press enter when the desired choice is
displayed.
This is the duration (.1 to 99.9 sec) that relay
A will remain energized. If 00.0 is selected,
the relay will latch until reset
Press the PRGM key to choose B TOT (B
assigned to total) or B RATE (B assigned to
rate). Press enter when the desired choice is
displayed.
THIS SELECTION
WILL ONLY APPEAR
IF "B TOT" IS
CHOSEN
SETTING
THE
PRESETS
ENTER
PRE A
PRE B
b ##.#
PRE A
Followed by
last PRE A
entered
PRE B
Followed by
last PRE B
entered
This is the duration (.1 to 99.9 sec) that relay
B will remain energized. If 00.0 is selected,
the relay will latch until reset
PRE A = Preset A; The set point at which
output A will trigger. If the displayed value is
not the desired preset, press the key(s) under
the digit to be changed.
PRE B = Preset B; The set point at which
output B will trigger. If the displayed value is
not the desired preset, press the key(s) under
the digit to be changed.
15
OUTPUT WIRING
The following diagrams detail the connection of the relay and analog output options. Each relay consist of a form A contact
(Normally Open). NPN transistor or Normally Closed contacts are available with solder jumpers (see Jumper Options).
ANALOG OUTPUT
The analog output can be selected to output 4-20 mA or 0-20 mA and can be selected to track the rate or total.
Pin 13 supplies 12 to 18V to power the current loop. Pin 14 supplies the current sinking driver. When connecting
a strip chart recorder, make connections as follows:
ALARMS
STRIP CHART
ANALOG
OFF
RUN
RATE
RUN
OUTPUT
ON
CAL.
0-20mA
TOTAL
SET
RECORDER
TURBINE FLOWMETER
+
–
-
PULSE OUTPUT
+12V
GND
1- COMMON
2- N.O.(N.C./NPN)
3- COMMON
4- N.O.(N.C./NPN)
5- RATE / TOTAL INPUT
6- INHIBIT TOTAL INPUT
7- 12VDC OUT/+DC IN
8- -DC (GROUND)
9- RESET INPUT
10- NOT USED
11- A.C. INPUT
12- A.C. INPUT
A
B
SWITCH
RELAYS
ON
13- V+
14- I SINK
4-20mA
1 2 3 4
The relays can be used to trigger alarms which warn the operator that the total or the rate has
exceeded a setpoint. The outputs are programmable to be assigned for rate or total. When assigned to the
total, the relays can have a user selectable on time (duration) or can be latched until reset. The total autorecycles
when set for a selectable on time. This can be use to create a relay pulse output.
ANALOG
OFF
RUN
RUN
OUTPUT
ON
CAL.
0-20mA
TOTAL
SET
LIGHT
BELL
RELAYS
1- COMMON
A
2- N.O.(N.C./NPN)
3- COMMON
B
4- N.O.(N.C./NPN)
5- RATE / TOTAL INPUT
6- INHIBIT TOTAL INPUT
7- 12VDC OUT/+DC IN
8- -DC (GROUND)
SWITCH
9- RESET INPUT
10- NOT USED
11- A.C. INPUT
12- A.C. INPUT
13- V+
14- I SINK
4-20mA
1 2 3 4
ON
RATE
16
ANALOG OUTPUT OPTION
Description:
An optional 4-20mA (0-20mA) output has been added to 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.
Connections: (see FIG. 1)
PIN13 supplies the 12 to 18 VDC to power the current loop.
PIN14 is the control sink driver
Accuracy:
± 0.25% FS
Compliance Voltage:
3 to 30 VDC non conductive
Setup:
The optional analog output feature uses 4 dip switches on the back
for setup. These switches are used as follows:
SW1 - View or change "set low" and/or "set high" values
SW2 - Select output for rate or total
SW3 - Select 4-20mA or 0-20mA
SW4 - Calibrate the unit.
After the regular parameters shown in the programming flowchart
have been set, locate the 4 switches on the back of the unit. (see
FIG. 1)
Switch Settings:
SWITCH 1: Enter Analog Low & High (normally off)
Switch 1 is used to load in the low (4mA or 0mA) and/or the high
(20mA) output settings. With power on, set switch 1 ON (up).
SWITCH 4: Calibrate (normally off)
Switch 4 is used for calibration. Calibration is done at the factory
and should not be needed (see SWITCH 1 to enter high and low
values). If recalibration is desired, a calibrated 20mA ammeter
with 1uA resolution is needed. Attach the "+" lead of the meter to
pin 13 and the "-" lead to pin 14. Set switch 4 ON (up). The unit
will output approximately 20.000mA and a decimal will light in the
third position. Read the output using the ammeter. Press PRE A.
If the display is the same as the ammeter reading, press ENTER.
If not, press buttons A through E to step to ammeter reading and
ENTER. (Disregard display which now shows the last count reading with decimal point in third position) Return switch 4 to OFF
(down) position.
RS232 & RS422 Operation:
When the unit is suppled with RS232 or RS422, the analog output
"low" and "high" settings can be accessed and changed through
the serial port. The codes are as follows:
AL Unit will display (transmit) analog out "low" value.
AL(S)XXXXX Unit will load analog out "low" with entered
number. (S) = space
AH Unit will display (transmit) analog out "high" value.
AH(S)XXXXX Unit will load analog out "high" with entered
number. (S) = space
FIG. 1
Analog Out Setup SwitchesSerial Port
13 14
1 2 3 4
ON
LOW SETTING is viewed or changed by pressing PRE A. If the
displayed value is correct, press ENTER. If not, press buttons A
through E to step to the desired value and press ENTER. (after
the "low set" is entered, the disply will show the last total reading).
HIGH SETTING is viewed or changed by pressing PRE B. If the
displayed value is correct, press ENTER. If not, press buttons A
through E to step to desired value and press ENTER.
Return switch 1 to OFF (down) position, PRE A and PRE B buttons
now function to view or change relay trip values.
SWITCH 2: Select Count or Rate
SW2 OFF (down): Analog output follows rate
SW2 ON (up): Analog output follows total
SWITCH 3: Select 4-20mA or 0-20mA
SW3 OFF (down): Selects 4-20mA output range
SW3 ON (up): Selects 0-20mA output range
1 2 3 4 5 6 7 8 9 10 11 12
Typical Wiring:
STRIP CHART
RECORDER
TURBINE FLOWMETER
REAR VIEW
+
-
PULSE OUTPUT
+12V
GND
1- COMMON
2- N.O.(N.C./NPN)
3- COMMON
4- N.O.(N.C./NPN)
5- A INPUT
6- INHIBIT TOTAL INPUT
7- 12VDC OUT/+DC IN
8- -DC (GROUND)
9- RESET INPUT
10- NOT USED
11- A.C. INPUT
12- A.C. INPUT
A
B
SWITCH
RELAYS
ON
13- V+
14- I SINK
OFF
RUN
4-20mA
RATE
RUN
1234
ON
CAL.
0-20mA
TOTAL
SET
ANALOG
OUTPUT
17
INTERFACE CARD RS 232/422 OPERATION
RS 232/422 SET-UP:
All serial communication mode changes must be done
through serial communications. Mode changes cannot be
done through the front panel. To initialize the unit, place a
jumper between pin 7(+12V )[bottom board] and pin 1(init) [DB
-9 connector] on initial power up. The unit defaults to: 300
baud rate,”MARK” parity and device number 01. To enter the
program mode you must set your terminal for 300 baud rate
and “MARK” parity. Next, type D1(s), (s)= space bar. The unit
will echo back “DEVICE #1:”. Now type EP (enter program)
and a carriage return (enter). The unit will echo back “PROGRAM SETTING”. You are now in the programming mode.
SETUP PROCEDURE:
The following sections consist of the communications setup
options as they appear in the menu. (If you wish to exit the
program mode, at any time you can hit the “escape key” (Hex
Code: 1B) and the unit will save the changes made but not
effect the remaining data values.) When each section of the
setup menu is displayed, the current data will appear in the <
> signs. If you wish to change the data, type in the number
of the desired choice and press return (enter). If you wish to
keep the current data, simply press return.
DEVICE NUMBER:
Each unit in the hook-up must be assigned it’s own device
number (1 to 99). Zero is reserved for a dedicated hook-up to
only one terminal, and it’s transmit output line remains in an
“on” active state. The device number is entered in the program
mode. The unit will prompt you:
DEVICE# <XX>?
If XX is the desired device number press return (enter), if not
enter the desired number after the question mark and press
return (enter).
BAUD RATE:
The baud rate is the speed at which data is transmitted,
expressed in bits per second. Baud rates of 300, 600, 1200,
2400, 4800 or 9600 are available. When in the baud rate
section of the menu, the unit will list :
BAUD RATES:
1:300 2:600 3:1200
4:2400 5:4800 6:9600
then prompt you:
BAUD RATE <300>?
Press return (enter) if this is the desired baud rate or enter the
assigned number of one of the six possible baud rates. If an
invalid baud rate is entered the unit will prompt you to choose
another baud rate. This will occur until a valid baud rate is
entered or escape is pressed.
“EVEN” (parity bit is logic 0 if total number of logic 1’s in the first
seven data bits is even), “MARK” (parity bit is always logic 1
- High / Mark) or “SPACE” (parity bit is always logic 0 - Low /
Space). If a “MARK” parity is chosen, it will appear that two
stop bits are used. Use the “MARK” parity with terminals using
parity “OFF” or “NONE”. These terminals ignore the parity.
The unit does not check the parity but does transmit the parity
chosen. When setting the parity, the unit will print:
PARITIES:
MARK-0 SPACE-1 EVEN-2 ODD-3
Then the unit will prompt you:
PARITY<MARK>?
If this is the desired parity press return (enter), if it isn’t enter
the number of the desired parity then press return (enter).
STROBE LIST:
The serial interface card is also equipped with a strobe line.
When the strobe line is triggered, a chosen set of data will be
transmitted to be displayed or printed. The selections for the
display list are entered in the program mode. Enter “1” to add
selections to the list and enter “0” to delete selections from the
list. The seven available items for the strobe display list are:
(1) Preset A, (2) Preset B, (3) K-Factor A, (4) K-Factor B, (5)
Rate of A, (6) Count A, (7) Count B. When setting the strobe
list the unit will print :
ENTER STROBE LIST:
DO NOT DISPLAY-0 DISPLAY-1
The unit will prompt you:
PRESET A<DISPLAY>?
PRESET B<DISPLAY>?
K-FACTOR A<DISPLAY>?
K-FACTOR B<DISPLAY>?
RATE<DISPLAY>?
COUNT A<DISPLAY>?
COUNT B<DISPLAY>?
If the above choices are entered, when the strobe line is
triggered (3-30V positive pulse) the unit will transmit:
DEVICE# 1:
PA XXXXX
PB XXXXX
KA XXXXX
KB XXXXX
DR XXXXXX
DA XXXXXX
DB XXXXXX
(SEE COMMANDS BELOW FOR DESCRIPTION OF COMMAND CODES).
Each time the strobe line gets triggered the unit will transmit
this data unless the program mode is entered and the strobe
list altered.
PARITY:
Parity is a bit of information that is inserted before the stop bit
and is used to help check if the transmission is correct. When
setting the parity you may select “ODD” (parity bit is logic 0 if
total number of logic 1’s in the first seven data bits is odd),
After these four items have been entered they will remain
unaltered unless the program mode is entered again and the
values changed. The unit is now set and must be addressed
by it’s device number to come on line again.
18
SERIAL INPUT COMMANDS:
To get a unit on line you must address it by it’s device number.
This is done by typing DXX(S), XX= device number. The unit
comes on line and echoes back DEVICE# XX. Insure that
“DEVICE# XX:” is received before requests are sent. The unit
is now ready to receive a command or string of commands
separated by a space. A carriage return (enter) will enter the
commands and processing of requests begins. The carriage
return (Hex Code “D”) puts the unit “off line” after data is
processed.
COMMANDS:
EP...........Unit will enter program mode.
DA..........Unit will display (transmit) TOTAL A.
DB..........Unit will display (transmit) TOTAL B (grand total).
DR..........Unit will display (transmit) rate A.
KA..........Unit will display K-factor A.
†*KA(S)XXXXX....Unit will load K-factor A
with entered number.
KB..........Unit will display K-factor B
†*KB(S)XXXXX....Unit will load K-factor B
with entered number.
PA...........Unit will display Preset A.
†PA(S)XXXXX....Unit will load Preset A with
entered number.
PB...........Unit will display Preset B
†PB(S)XXXXX....Unit will load Preset B with
entered number.
RA..........Total A will reset
†*RA(S)XXXXXX...Unit will set Total A to
entered number.
RB..........Total B (grand total) will reset.
†*RB(S)XXXXXX...Unit will reset Total B (grand total) to
entered number.
*THE UNIT WILL RECOGNIZE A DECIMAL IF ONE IS
PLACED IN ANY OF THESE DATA VALUES.
†THE UNIT WILL ONLY RECOGNIZE THE LAST FIVE
DIGITS ENTERED (SIX DIGITS FOR RA & RB).
The following is an example of requests and responses:
Transmit from terminal Receive from unit
(s)=Space
D5(s) [Unit #5 Activated] DEVICE# 5:
PA(s)12345(s)PA PA 12345 PA
KA(s)1576(s)KA KA 1576 KA
KB(s)6751(s)KB KB 6751 KB
RA(s)RB[RETURN] RA RB
(UNIT PRESETS AND A & B K-FACTORS ARE SET AND
BOTH COUNTERS ARE RESET)
12345
1576
6751
SERIAL INTERFACE OPERATION:
Data is received and transmitted over standard EIA RS232 or
RS422 levels. Each ten bit character is made up of a start bit,
seven bit ASCII code, a parity bit and a stop bit. Device
number, baud rate, parity and strobe list are entered in the
program setup mode and will remain in memory even if power
is lost.
The input impedance of RS232 is 3KΩ to 7KΩ worst case. The
terminal addressing the unit must be capable of driving all
loads in the loop. The input impedance of RS422 is much
higher and there should be no problem driving as many as 99
units. The transmit line remains in a high impedance “off” state
until addressed. Only one unit is to be on line at a time!!! More
than one unit on line could damage the unit or corrupt the
transmitted data.
When the unit is active (on line) it will operate in a full duplex,
echo back mode, so that data sent from the terminal will be
transmitted back for verification. When the unit is “on line”, use
the proper serial transmit commands to request data or set a
new value. Up to 80 characters of data can be linked together
and transmitted to the unit in a string as long as there is a
space between the commands. If an error is made, a
correction can be made by back spacing and retyping correct
data before the return (enter) is sent. Once a return (enter) is
sent, the unit begins processing the data and will transmit the
requested data on a non-priority basis over the data transmit
line. A keypad entry or incoming data will halt the data
communication cycle. Therefore, there should be a pause
after data is requested to insure that all data has been
transmitted before making another request or addressing
another unit. If the unit is not busy, it should not take longer
than 300 msec to process each request. To find the cycle time
to process and transmit a request, calculate the bit transmit
time by using this formula: [(1÷ baud rate) x (80) + .005] x
number of requests made. This time will be extended if the
unit must service the front keypad. If transmission has not
started within two seconds after data is requested, it can be
assumed that there is a problem. The unit transmits a carriage
return and line feed after each data value. Any new communication must be started with DXX(S) (device number and
space).
RS232/RS422 - IBM-PC INTERFACE:
The following program is for IBM basic to set up RS232/RS422
on serial port (#1) at 300 baud. Run this program after
connecting the serial interface connections.
10 SCREEN 0,0:WIDTH 80
20 CLS:CLOSE
30 OPEN “COM1:300,n,7,1,CS,DS,CD” AS #1
40 ON ERROR GOTO 110
50 B$=INKEY$
60 IF B$< >”” THEN PRINT #1,B$;
70 IF EOF (1) THEN 50
80 A$=INPUT$ (LOC(1),#1)
90 PRINT A$;
100 GOTO 50
110 RESUME
19
RS232 / RS422 WIRING
234
5
678
9
RS 232
COMPUTER HOOKUP:
RS 232: When connecting the unit to a computer with RS 232
communication, only three connections are needed. These
connections are: Receive data, Transmit data and Ground.
The connections should be made as follows:
DP -9 CONNECTOR COMPUTER
Transmit data (pin 2) Receive data
Receive data (pin 3) Transmit data
Ground (pin 5) Ground
RS 422: When connecting the unit to a computer with RS 422,
five connections are needed. These connections are: Receive data A (+), Receive data B (-), Transmit data A (+),
Transmit data B (-) and Ground. The connections should be
made as follows:
DP -9 CONNECTOR COMPUTER
Transmit data A(+) (pin 2 Receive data A(+)
Transmit data B(-) (pin 7) Receive data B(-)
Receive data A(+) (pin 3) Transmit data A(+)
Receive data B(-) (pin 8) Transmit data B(-)
Ground (pin 5) Ground
RST
B C
D E
A
ENTER LOCK PRE A PRE B VIEW PRGM
RST
B C
D E
A
ENTER LOCK PRE A PRE B VIEW PRGM
RS 232
1. INITIALIZE
2. TRANSMIT
3. RECEIVE
4. N/C
5. GROUND
6. STROBE
7. N/C
8. N/C
9. N/C
RECEIVE PIN (3)
TRANSMIT PIN (2)
GROUND PIN (5)
RS 422
RECEIVE A (+) PIN (3)
RECEIVE B (-) PIN (8)
TRANSMIT A (+) PIN (2)
TRANSMIT B (-) PIN (7)
GROUND PIN (5)
1
RS 422
1. INITIALIZE
2. TRANSMIT A (+)
3. RECEIVE A (+)
4. N/C
5. GROUND
6. STROBE
7. TRANSMIT B (-)
8. RECEIVE B (-)
9. N/C
RS 232
STROBE PIN (6)
PRINTER HOOKUP:
When connecting the unit to a printer, you must first program
the desired baud rate, parity and strobe list with a computer.
RST
B C
A
ENTER LOCK PRE A PRE B VIEW PRGM
After the unit is programmed it can be connected to the printer.
Connect the transmit line(s) of the unit to the receive line(s) of
the printer and be sure that both devices have common
grounds. When the strobe line is triggered the unit will transmit
the selected strobe list which you had previously programmed.
RST
B C
A
ENTER LOCK PRE A PRE B VIEW PRGM
20
+12V PIN (7)
(BOTTOM BOARD)
TRANSMIT PIN (2)
D E
GROUND PIN (5)
STROBE PIN (6)
+12V PIN (7)
(BOTTOM BOARD)
TRANSMIT A (+) PIN (2)
D E
TRANSMIT B (-) PIN (7)
GROUND PIN (5)
RS 422
TROUBLESHOOTING GUIDE
PROBLEM SOLUTIONSPOSSIBLE CAUSES
Power is applied to unit but the display
does not light.
Unit works, but occasionally the display
freezes or skips counts.
Input signal is connected but the unit
does not count or display rate.
Rate is displaying: r FFFFF.
1. AC or DC power wiring is incorrect.
1. Line noise is affecting the processor
due to a current spike or surge.
1. Input wiring is incorrect.
2. Scale factors are incorrect.
3. Transmitting device is defective.
4. Wrong debounce filtering selected.
5. Minitrol is defective.
1. The unit is trying to display a
number which it can’t (too large).
2. Line noise affected unit on power
up.
1. Recheck power wiring
1. Use a different power supply or
install a surge suppressor.
1. Recheck input wiring.
2. Recheck scale factors and factor
calculations.
3. Replace transmitting device.
4. Recheck debounce filtering selection
“hi cps” or “lo cps”.
5. To confirm set scale factors at one
and connect a wire to pin #7 and
touch it to pin # 5 (input A). Each
time pin #5 is touched counter A
should count once. If not, call
factory for RMA.
1. Check scaling factor, if it is correct,
lower the number of significant
figures.
2. Reprogram the unit and be sure to
enter a decimal (enter one and re
move it if a decimal is not desired).
Relays are not activating properly.
Counter resets before reaching 999999.
1. Wrong relay duration.
2. Relay set for wrong activation
i.e. count instead of rate.
1. Relay duration is set at a value other
than 00.0. This causes the counter
to auto-reset at the preset.
1. Recheck programmed relay duration.
2. Recheck programmed relay
activation mode.
1. If relay outputs are not being used,
set the relays for rate.
2. Set the relay durations to 00.0.
21
NOTE TO OUR CUSTOMER
KEP is dedicated to providing complete customer service and customer satisfaction. If you
have any comments or criticisms about how to improve this manual, please make a note
of the problem/improvement and notify us. We are always open to new ideas and
improvements. So please let us know your ideas and comments.
Call us toll free: 800-631-2165
WARRANTY
This product is warranted against defects in materials and workmanship for a period of two
(2) years from the date of shipment to Buyer.
The Warranty is limited to repair or replacement of the defective unit at the option of the
manufacturer. This warranty is void if the product has been altered, misused, dismantled, or
otherwise abused.
ALL OTHER WARRANTIES, EXPRESSED OR IMPLIED, ARE EXCLUDED, INCLUDING
BUT NOT LIMITED TO THE IMPLIED WARRANTIES OF MERCHANTABILITY AND
FITNESS FOR A PARTICULAR PURPOSE.
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