Kobold MPV Operating Manual

KOBOLD Model MPV

Pulse Input Rate/Totalizer

Operating Instructions

KOBOLD Instruments, Inc.

1801 Parkway View Drive
Pittsburgh, PA 15205
P +1.412.788.2830

www.koboldusa.com

KOBOLD Model MPV Pulse Input Rate/Totalizer Operating Instructions

Disclaimer

The information contained in this document is subject to change
without notice. KOBOLD Instruments makes no representations or
warranties with respect to the contents hereof; and specifically
disclaims any implied warranties of merchantability or fitness for a
particular purpose.

!

CAUTION: Read complete

instructions prior to installation

and operation of the meter.

WARNING:

This product is not recommended for life support applications or
applications where malfunctioning could result in personal injury
or property loss. Anyone using this product for such applications
does so at his/her own risk. KOBOLD Instruments Inc. shall not be
held liable for damages resulting from such improper use.

WARNING: Risk of

electric shock or

personal injury.

Limited Warranty

KOBOLD Instruments Inc. warrants this product against defects in
material or workmanship for the specified period under
“Specifications” from the date of shipment from the factory. KOBOLD
Instruments’ liability under this limited warranty shall not exceed the
purchase value, repair, or replacement of the defective unit.

Registered Trademarks

Modbus® is a registered trademark of Schneider Automation Inc. All
other trademarks mentioned in this document are the property of their
respective owners.

© 2016 KOBOLD Instruments Inc. All rights reserved.

www.koboldusa.com

2

KOBOLD Model MPV Pulse Input Rate/Totalizer Operating Instructions

Table of Contents

INTRODUCTION ------------------------------------------------------------ 6
ORDERING INFORMATION --------------------------------------------- 7
SPECIFICATIONS ---------------------------------------------------------- 8

General ------------------------------------------------------------------------------- 8
Rate Input --------------------------------------------------------------------------- 9
Rate/Totalizer -------------------------------------------------------------------- 10
Relays ------------------------------------------------------------------------------ 11
Isolated 4-20 mA Transmitter Output ------------------------------------ 12
Modbus® RTU Serial Communications ---------------------------------- 13
MPV-Option-S Digital Input & Output Expansion Module --------- 13

COMPLIANCE INFORMATION ---------------------------------------- 14

Safety ------------------------------------------------------------------------------- 14
Electromagnetic Compatibility --------------------------------------------- 14

SAFETY INFORMATION ------------------------------------------------ 15
INSTALLATION ------------------------------------------------------------ 16

Unpacking ------------------------------------------------------------------------- 16
Panel Mounting Instructions ------------------------------------------------ 16

Mounting Dimensions ------------------------------------------------------- 17

Configuration for 12 or 24 VDC Power Option ------------------------ 18
Transmitter Supply Voltage Selection (P+, P-) ----------------------- 19
Connections ---------------------------------------------------------------------- 19

Connectors Labeling --------------------------------------------------------- 20
Power Connections ---------------------------------------------------------- 20
Signal Connections ---------------------------------------------------------- 21
Modbus RTU Serial Communications ----------------------------------- 23
Relay Connections ----------------------------------------------------------- 23
Switching Inductive Loads -------------------------------------------------- 24
F4 Digital Input Connections ----------------------------------------------- 25
4-20 mA Output Connections ---------------------------------------------- 25
Analog Output Transmitter Power Supply ------------------------------ 25
External Relay & Digital I/O Connections ------------------------------ 26
Interlock Relay Feature ----------------------------------------------------- 27

SETUP AND PROGRAMMING ---------------------------------------- 28

Front Panel Buttons and Status LED Indicators --------------------- 29
Display Functions and Messages ----------------------------------------- 30
Main Menu ------------------------------------------------------------------------ 34
Setting Numeric Values ------------------------------------------------------ 35
Setting Up the Rate/Totalizer Meter (setup) --------------------------- 36

3

KOBOLD Model MPV Pulse Input Rate/Totalizer Operating Instructions

Setting the Input Signal (Input) ------------------------------------------ 37
Setting the Totalizer Features (total) ---------------------------------- 37
Setting the Input Units or Custom Tags (units) ---------------------- 38
Setting the Decimal Point (dEc pt) -------------------------------------- 39
Programming the Rate/Totalizer (prog) -------------------------------- 39

K-Factor Calibration (Factor) ----------------------------------------- 40
Multi-Point Calibration & Scaling -------------------------------------- 40
MeterView® Pro Software ----------------------------------------------- 40
Scaling the Meter (SCALE) ---------------------------------------------- 41
Gate Function (Gate) ---------------------------------------------------- 42
Contact De-Bounce Filter (FiLter) ---------------------------------- 43
Time Base, Total Conversion Factor & Total Reset -------------- 44

Calibrating the Meter with External Source (Cal) ----------------- 45
Setting the Display Parameter & Intensity (dsplay) ----------------- 46
Display Setup Menu --------------------------------------------------------- 47

Setting the Relay Operation (relay) ------------------------------------- 48

Relay Assignment (Assign) ----------------------------------------------- 49
Setting the Relay Action ---------------------------------------------------- 50
Programming Set and Reset Points ------------------------------------- 51
Setting Fail-Safe Operation ------------------------------------------------ 51
Programming Time Delay -------------------------------------------------- 51

Relay and Alarm Operation Diagrams ----------------------------------- 52

High Alarm Operation (Set > Reset) ------------------------------------- 52
Low Alarm Operation (Set < Reset) -------------------------------------- 53
High Alarm with Fail-Safe Operation (Set > Reset) ------------------ 54
Low Alarm with Fail-Safe Operation (Set < Reset) ------------------- 55
Alternation Control Operation --------------------------------------------- 56
Rate Relay Sampling Operation ------------------------------------------ 57
Total Relay Sampling Operation ------------------------------------------ 57
Time Delay Operation ------------------------------------------------------- 58

Relay Operation Details ------------------------------------------------------ 59

Overview ------------------------------------------------------------------------ 59
Relays Auto Initialization ---------------------------------------------------- 59
Fail-Safe Operation ---------------------------------------------------------- 59
Front Panel LEDs ------------------------------------------------------------- 60
Latching and Non-Latching Relay Operation -------------------------- 60
Non-Latching Relay (Auto) ------------------------------------------------- 61
Non-Latching Relay (A-nman) --------------------------------------------- 61
Latching Relay (LatcH) ----------------------------------------------------- 61
Latching Relay (Lt-Clr) ---------------------------------------------------- 62
Acknowledging Relays ------------------------------------------------------ 62
Setting Up the Interlock Relay (Force On) Feature ------------------ 63

Scaling the 4-20 mA Analog Output (Aout) ---------------------------- 64

4

KOBOLD Model MPV Pulse Input Rate/Totalizer Operating Instructions

Reset Menu (reset) ------------------------------------------------------------ 65
Control Menu (Contrl) -------------------------------------------------------- 65
Setting Up the Password (pass) ------------------------------------------- 65

Protecting or Locking the Meter ------------------------------------------- 66
Total Reset Password & Non-Resettable Total ----------------------- 66
Making Changes to a Password Protected Meter -------------------- 67
Disabling Password Protection -------------------------------------------- 67

Advanced Features Menu ---------------------------------------------------- 68

Advanced Features Menu & Display Messages ---------------------- 68
Rounding Feature (round) ------------------------------------------------- 71
Modbus RTU Serial Communications (serial) ---------------------- 71
Select Menu (SElEct) ------------------------------------------------------- 72
Signal Input Conditioning (Functn) -------------------------------------- 72
Multi-Point Linearization (Linear) ---------------------------------------- 73
Low-Flow Cutoff (CutofF) -------------------------------------------------- 73
Analog Output Programming (AoutPr) ---------------------------------- 74
Programmable Function Keys User Menu (user) -------------------- 75

METER OPERATION ----------------------------------------------------- 76

Front Panel Buttons Operation -------------------------------------------- 76
Function Keys Operation ---------------------------------------------------- 76
F4 Operation --------------------------------------------------------------------- 77
Maximum/Minimum Readings ---------------------------------------------- 77

TROUBLESHOOTING ---------------------------------------------------- 78

Diagnostics Menu (diag) ----------------------------------------------------- 78

Determining Software Version -------------------------------------------- 78

Reset Meter to Factory Defaults ------------------------------------------- 79

Factory Defaults & User Settings ----------------------------------------- 80

Troubleshooting Tips --------------------------------------------------------- 83

5

KOBOLD Model MPV Pulse Input Rate/Totalizer Operating Instructions

Table of Figures

Figure 1: 1/8 DIN Panel Cutout and Mounting ................................... 16

Figure 2: Meter Dimensions - Side View ............................................ 17

Figure 3: Meter Dimensions - Top View ............................................. 17

Figure 4: Jumper Configuration for 12/24 VDC Power ..................... 18

Figure 5: Transmitter Supply Voltage Selection ............................... 19

Figure 6: Connector Labeling for Fully Loaded MPV Pulse Input ... 20

Figure 7: Power Connections ............................................................. 20

Figure 8: Flowmeter Powered by Internal Power Supply ................. 21

Figure 9: Flowmeter Powered by External Supply ........................... 21

Figure 10: Self-Powered Magnetic Pickup Coil Flowmeter .............. 21

Figure 11: Relay Connections ............................................................ 23

Figure 12: AC and DC Loads Protection ........................................... 24

Figure 13: Low Voltage DC Loads Protection ................................... 24

Figure 14. F4 Digital Input Connections ............................................ 25

Figure 15: 4-20 mA Output Connections ........................................... 25

Figure 16: Expansion Modules & DIN Rail Mounting Kit .................. 26

Figure 17: External Relays Module Connections ............................. 26

Figure 18: Digital I/O Module Connections ....................................... 27

Figure 19: Interlock Connections ....................................................... 27

Figure 20: Acknowledge Relays w/Function Key or Digital Input ... 62

INTRODUCTION

The KOBOLD Model MPV pulse input rate/totalizer is a multipurpose, easy-to-use
rate meter and totalizer ideal for flow rate, total, and control applications. It accepts
pulse (40 mVp-p to 8 Vp-p), square wave (0-5 V, 0-12 V, or 0-24 V), open collector,
NPN, PNP, TTL or switch contact signals. Three of the front panel buttons can be
custom-programmed for specific operation.

The basic model includes an isolated 24 VDC transmitter power supply that can be
used to power the input transmitter or other devices. An additional isolated 24 VDC
power supply is included with the 4-20 mA output option.

A fully loaded MPV pulse input rate/totalizer has the following: four SPDT relays,
4-20 mA output, and two 24 VDC power supplies. The MPV’s capabilities may be
enhanced by adding the following external expansion modules: four SPST relays
(creating an eight-relay rate/totalizer), two digital I/O modules with four inputs and four
outputs each, and RS-232, RS-485, and USB communication adapters.

The eight relays can be used for alarm indication or process control applications. The
4-20 mA isolated output, Modbus RTU serial communications, and digital I/O options
make the KOBOLD Model MPV an excellent addition to any system.

A digital input is standard.

6

KOBOLD Model MPV Pulse Input Rate/Totalizer Operating Instructions

ORDERING INFORMATION

Standard Models

85-265 VAC
Model

MPV-1510 MPV-1310 No options
MPV-1512 MPV-1312 2 relays
MPV-1513 MPV-1313 4-20 mA output
MPV-1514 MPV-1314 4 relays
MPV-1515 MPV-1315 2 relays & 4-20 mA output
MPV-1517 MPV-1317 4 relays & 4-20 mA output

Options

Model Description

MPV-Option-B RS-485 serial adapter
MPV-Option-E Custom Set-up
MPV-Option-F USB serial adapter

MPV-Option-R 4 SPST (Form A) relays
MPV-Option-S 4 digital inputs & 4 digital outputs (2 may be connected)
MPV-Option-X NEMA 4X Enclosure

12/24 VDC
Model

Options Installed

7

KOBOLD Model MPV Pulse Input Rate/Totalizer Operating Instructions

SPECIFICATIONS

Except where noted all specifications apply to operation at +25°C.

General

DISPLAY Upper display: 0.6" (15 mm) high, red LEDs

DISPLAY
INTENSITY

DISPLAY
UPDATE RATE

OVERRANGE

DISPLAY
ASSIGNMENT

PROGRAMMING
METHODS

RECALIBRATION All ranges are calibrated at the factory to read frequency in

MAX/MIN
DISPLAY

PASSWORD

NON-VOLATILE
MEMORY

POWER
OPTIONS

FUSE Required external fuse: UL Recognized, 5 A max, slow

ISOLATED
TRANSMITTER
POWER SUPPLY

ISOLATION 4 kV input/output-to-power line

Lower display: 0.46" (12 mm) high, red LEDs
6 digits: each (-99999 to 999999), with lead zero blanking.

Eight user selectable intensity levels

Rate: 10 per second; up to 1 per 100 seconds (and is a
function of Low Gate setting)

Total: 10 per second (fixed)

Display flashes

The Upper and Lower displays may be assigned to rate,
total, grand total, alternate rate & total, max/min, units
(lower display only), set points, Modbus input, & more.

Four front panel buttons, digital inputs, PC and MeterView Pro
software, Modbus registers, or cloning using Copy function.

Hz. No recalibration required.

Max/min readings reached by the process are stored until
reset by the user or until power to the meter is cycled.

Three programmable passwords restrict modification of
programmed settings and two prevent resetting the totals.

Pass 1: Allows use of function keys and digital inputs
Pass 2: Allows use of function keys, digital inputs and editing set/reset points
Pass 3: Restricts all programming, function keys, and digital inputs.
Total: Prevents resetting the total manually
Gtotal: Prevents resetting the grand total manually

All programmed settings are stored in non-volatile memory
for a minimum of ten years if power is lost.

85-265 VAC 50/60 Hz, 90-265 VDC, 20 W max
or jumper selectable 12/24 VDC ± 10%, 15 W max

blow; up to 6 meters may share one 5 A fuse

Terminals P+ & P-: 24 VDC ± 10%. 12/24 VDC powered models
selectable for 24, 10, or 5 VDC supply (internal jumper J4).
85-265 VAC models rated @ 200 mA max, 12/24 VDC powered
models rated @ 100 mA max, @ 50 mA max for 5 or 10 VDC
supply.

500 V input-to-output or output-to-P+ supply

999999

8

KOBOLD Model MPV Pulse Input Rate/Totalizer Operating Instructions

OVERVOLTAGE
CATEGORY

ENVIRONMENTAL Operating temperature range: -40 to 65°C

CONNECTIONS Removable screw terminal blocks accept 12 to 22 AWG

ENCLOSURE 1/8 DIN, high impact plastic, UL 94V-0, color: black

MOUNTING 1/8 DIN panel cutout required:

TIGHTENING
TORQUE

OVERALL
DIMENSIONS

WEIGHT 9.5 oz (269 g)

WARRANTY 3 years parts & labor

Installation Overvoltage Category II:
Local level with smaller transient overvoltages than
Installation Overvoltage Category III.

Storage temperature range: -40 to 85°C
Relative humidity: 0 to 90% non-condensing

wire, RJ45 for external relays, digital I/O, and serial
communication adapters.

3.622" x 1.772" (92 mm x 45 mm)
Two panel mounting bracket assemblies are provided.

Screw terminal connectors: 5 lb-in (0.56 Nm)

4.68" x 2.45" x 5.64" (119 mm x 62 mm x 143 mm)
(W x H x D)

Rate Input

INPUTS Field selectable: Pulse or square wave 0-5 V, 0-12 V, or

LOW VOLTAGE
MAG PICKUP
(Isolated)
MINIMUM INPUT
FREQUENCY
MAXIMUM INPUT
FREQUENCY
INPUT
IMPEDANCE

ACCURACY ±0.03% of calibrated span ±1 count
TEMPERATURE
DRIFT
MULTI-POINT
LINEARIZATION
LOW-FLOW
CUTOFF
DECIMAL POINT Up to five decimal places or none:

0-24 V @ 30 kHz; TTL; open collector 4.7 kΩ pull-up to 5 V
@ 30 kHz; NPN or PNP transistor, switch contact 4.7 kΩ
pull-up to 5 V @ 40 Hz; Modbus PV (Slave)
Sensitivity: 40 mVp-p to 8Vp-p

0.001 Hz
Minimum frequency is dependent on high gate setting.
30,000 Hz (10,000 for low voltage mag pickup)

Pulse input: Greater than 300 kΩ @ 1 kHz.
Open collector/switch input: 4.7 kΩ pull-up to 5 V.

Rate display is not affected by changes in temperature.

2 to 32 points

0-999999 (0 disables cutoff function)

d.ddddd, d.dddd, d.ddd, d.dd, d.d, or dddddd

9

KOBOLD Model MPV Pulse Input Rate/Totalizer Operating Instructions

CALIBRATION May be calibrated using K-factor, internal calibration, or by

K-FACTOR Field programmable K-factor converts input pulses to rate in

CALIBRATION
RANGE

FILTER Programmable contact de-bounce filter: 40 to 999 Hz

TIME BASE Second, minute, hour, or day
GATE Low gate: 0.1-99.9 seconds

F4 DIGITAL INPUT
CONTACTS
F4 DIGITAL INPUT
LOGIC LEVELS

applying an external calibration signal.

engineering units. May be programmed from 0.00001 to
999,999 pulses/unit.
Input 1 signal may be set anywhere in the range of the
meter; input 2 signal may be set anywhere above or below
input 1 setting.
Minimum input span between any two inputs is 10 Hz.
An error message will appear if the input 1 and input 2
signals are too close together.

maximum input frequency allowed with low speed filter.

High gate: 2.0-999.9 seconds

3.3 VDC on contact. Connect normally open contacts
across F4 to COM.
Logic High: 3 to 5 VDC
Logic Low: 0 to 1.25 VDC

Rate/Totalizer

DISPLAY
ASSIGNMENT

RATE DISPLAY
INDICATION
TOTAL DISPLAY
& TOTAL
OVERFLOW

ALTERNATING
DISPLAY
TOTAL
DECIMAL POINT

TOTALIZER Calculates total based on rate and field programmable

TOTALIZER
ROLLOVER

The Upper and Lower displays may be assigned to rate,
total, grand total, alternate rate/total, alternate rate/grand
total, set points, alternate rate/units, alternate total/units,
alternate grand total/units, display Hi, display Lo, display
Hi/Lo, display Modbus, display units (lower display) and
display Off (lower display).

-99999 to 999999, lead zero blanking. “R” LED illuminates
while displaying rate or frequency.
0 to 999,999; automatic lead zero blanking. “T” LED is
illuminated while displaying total or grand total.
Up to 999,999,999 with total-overflow feature. “
displayed to the left of total overflow and ▲ LED is
illuminated.
Either display may be programmed to alternate between
rate and total or rate and grand total every 10 seconds.
Up to five decimal places or none:

oF” is

d.ddddd, d.dddd, d.ddd, d.dd, d.d, or dddddd

Total decimal point is independent of rate decimal point.

multiplier to display total in engineering units. Time base
must be selected according to the time units in which the
rate is displayed.
Totalizer rolls over when display exceeds 999,999,999.
Relay status reflects display.

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KOBOLD Model MPV Pulse Input Rate/Totalizer Operating Instructions

TOTAL
OVERFLOW
OVERRIDE
TOTALIZER
PRESETS

PROGRAMM­ABLE DELAY
ON RELEASE

TOTAL RESET Via front panel button, external contact closure on digital

TOTAL RESET
PASSWORD
NON­RESETTABLE
TOTAL

Program total reset for automatic with 0.1 second delay and
set point 1 for 999,999

Up to eight, user selectable under setup menu. Any set
point can be assigned to total and may be programmed
anywhere in the range of the meter for total alarm
indication.

0.1 and 999.9 seconds; applied to the first relay assigned to
total or grand total.
If the meter is programmed to reset total to zero
automatically when the preset is reached, then a delay will
occur before the total is reset.

inputs, automatically via user selectable preset value and
time delay, or through serial communications.
Total and grand total passwords may be entered to prevent
resetting the total or grand total from the front panel.
The grand total can be programmed as a non-resettable
total by entering the password “050873”.

Once the Grand Total has been programmed
as “non-resettable” the feature cannot be

!

Caution!

disabled.

Relays

RATING 2 or 4 SPDT (Form C) internal and/or 4 SPST (Form A)

NOISE
SUPPRESSION

RELAY
ASSIGNMENT

DEADBAND 0-100% of span, user programmable

HIGH OR LOW
ALARM

RELAY
OPERATION

external; rated 3 A @ 30 VDC and 125/250 VAC resistive
load; 1/14 HP (≈ 50 W) @ 125/250 VAC for inductive loads

Noise suppression is recommended for each relay contact
switching inductive loads; see page 24 for details.

Relays may be assigned to rate, total, or grand total.

User may program any alarm for high or low trip point.
Unused alarm LEDs and relays may be disabled (turn off).

Automatic (non-latching)
Latching (requires manual acknowledge)
Sampling (based on time)
Alternation control (2 to 8 relays)
Off (disable unused relays and enable Interlock feature)
Manual on/off control mode

11

KOBOLD Model MPV Pulse Input Rate/Totalizer Operating Instructions

RELAY RESET

TIME DELAY 0 to 999.9 seconds, on & off relay time delays

FAIL-SAFE
OPERATION

AUTO
INITIALIZATION

User selectable via front panel buttons, digital inputs, or PC

1. Automatic reset only (non-latching), when the
input passes the reset point or total is reset to
zero.

2. Automatic + manual reset at any time (non-latching)

3. Manual reset only, at any time (latching)

4. Manual reset only after alarm condition has cleared
(Latching with clear)

Note: Front panel button or digital input may be assigned to

acknowledge relays programmed for manual reset.

Programmable and independent for each relay.

Programmable and independent for each relay.

Note: Relay coil is energized in non-alarm condition.

In case of power failure, relay will go to alarm state.

When power is applied to the meter, relays will reflect the
state of the input to the meter.

Isolated 4-20 mA Transmitter Output

OUTPUT
SOURCE

SCALING RANGE 1.000 to 23.000 mA for any display range.

CALIBRATION Factory calibrated: 0.0 to 1000.0 = 4-20 mA output

ANALOG OUT
PROGRAMMING

ACCURACY ± 0.1% FS ± 0.004 mA

TEMPERATURE
DRIFT

ISOLATED
TRANSMITTER
POWER SUPPLY

EXTERNAL LOOP
POWER SUPPLY

OUTPUT LOOP
RESISTANCE

Rate/process, total, grand total, max, min, set points 1-8,
Modbus input or manual control mode

23.000 mA maximum for all parameters:
Overrange, underrange, max, min, and break

0.4 µA/°C max from 0 to 65°C ambient,

0.8 µA/°C max from -40 to 0°C ambient

Note: Analog output drift is separate from input drift.

Terminals I+ & R: 24 VDC ± 10%. May be used to power the
4-20 mA output or other devices. Refer to Figure 6 on page
20 and Figure 15 on page 25.

All models rated @ 40 mA max.

35 VDC maximum

Power supply

24 VDC

35 VDC (external)

Minimum

10 Ω

100 Ω

Maximum

700 Ω

1200 Ω

12

KOBOLD Model MPV Pulse Input Rate/Totalizer Operating Instructions

Modbus® RTU Serial Communications

SLAVE ID 1 – 247 (Meter address)

BAUD RATE 300 - 19,200 bps

TRANSMIT
TIME DELAY

DATA 8 bit (1 start bit, 1 or 2 stop bits)

PARITY Even, Odd, or None with 1 or 2 stop bits

BYTE-TO-BYTE
TIMEOUT

TURN AROUND
DELAY

Note: Refer to the Modbus® Register Tables located at www.koboldusa.com for
details.

Programmable between 0 and 199 ms

0.01 – 2.54 second

Less than 2 ms (fixed)

MPV-Option-S Digital Input & Output Expansion Module

CHANNELS 4 digital inputs & 4 digital outputs per module

SYSTEM Up to 2 modules for a total of 8 inputs & 8 outputs

DIGITAL INPUT
LOGIC HIGH

DIGITAL INPUT
LOGIC LOW

DIGITAL OUTPUT
LOGIC HIGH

DIGITAL OUTPUT
LOGIC LOW

SOURCE
CURRENT

SINK
CURRENT

+5 V
TERMINAL

3 to 5 VDC

0 to 1.25 VDC

3.1 to 3.3 VDC

0 to 0.4 VDC

10 mA maximum output current

1.5 mA minimum input current

To be used as pull-up for digital inputs only.
Connect normally open contacts across +5 V & DI 1-4.

13

KOBOLD Model MPV Pulse Input Rate/Totalizer Operating Instructions

COMPLIANCE INFORMATION

Safety

UL & c-UL LISTED USA & Canada

UL FILE NUMBER E482438

FRONT PANEL UL Type 4X, NEMA 4X, IP65; panel gasket provided

LOW VOLTAGE
DIRECTIVE

Electromagnetic Compatibility

EMISSIONS

Radiated
Emissions

AC Mains
Conducted
Emissions

IMMUNITY

RFI - Amplitude
Modulated

Electrical Fast
Transients

Electrostatic
Discharge

RFI - Conducted
AC Surge
Surge
Power-Frequency

Magnetic Field
Voltage Dips

Voltage
Interruptions

UL 508 Industrial Control Equipment

EN 61010-1:2010
Safety requirements for measurement, control, and
laboratory use

EN 55022:2010
Class A ITE emissions requirements

Class A

Class A

EN 61326-1:2013
Measurement, control, and laboratory equipment

EN 61000-6-2:2005
EMC heavy industrial generic immunity standard

80 -1000 MHz 10 V/m 80% AM (1 kHz)

1.4 - 2.0 GHz 3 V/m 80% AM (1 kHz)

2.0 - 2.7 GHz 1 V/m 80% AM (1 kHz)

±2kV AC mains, ±1kV other

±4kV contact, ±8kV air

10V, 0.15-80 MHz, 1kHz 80% AM

±2kV Common, ±1kV Differential

1KV (CM)

30 A/m 70%V for 0.5 period

40%V for 5 & 50 periods
70%V for 25 periods

<5%V for 250 periods

14

KOBOLD Model MPV Pulse Input Rate/Totalizer Operating Instructions

Note:

Testing was conducted on MPV meters installed through the covers
of grounded metal enclosures with cable shields grounded at the
point of entry representing installations designed to optimize EMC
performance.

Declaration of Conformity available at www.koboldusa.com

SAFETY INFORMATION

Warning!

!

CAUTION: Read complete

instructions prior to
installation and operation
of the meter.

Hazardous voltages exist within enclosure.
Installation and service should be performed only
by trained service personnel.

WARNING: Risk of
electric shock or
personal injury.

15

KOBOLD Model MPV Pulse Input Rate/Totalizer Operating Instructions

A

INSTALLATION

There is no need to remove the meter from its case to complete
the installation, wiring, and setup of the meter for most
applications. Instructions are provided for setting up a
12/24 VDC powered meter to operate from 12 VDC and for
changing the transmitter power supply to output 5 or 10 VDC
instead of 24 VDC, see page 18.

Unpacking

Remove the meter from box. Inspect the packaging and
contents for damage. Report damages, if any, to the carrier.

If any part is missing or the meter malfunctions, please contact
your supplier or the factory for assistance.

Panel Mounting Instructions

• Prepare a standard 1/8 DIN panel cutout – 3.622" x 1.772" (92 mm x
45 mm). Refer to Figure 1 for more details.

• Clearance: allow at least 6.0" (152 mm) behind the panel for wiring.

• Panel thickness: 0.04" - 0.25" (1.0 mm - 6.4 mm).

Recommended minimum panel thickness to maintain Type 4X
rating: 0.06" (1.5 mm) steel panel, 0.16" (4.1 mm) plastic panel.

• Remove the two mounting brackets provided with the meter (back-off the two
screws so that there is ¼" (6.4 mm) or less through the bracket. Slide the
bracket toward the front of the case and remove).

• Insert meter into the panel cutout.

• Install mounting brackets and tighten the screws against the panel. To

achieve a proper seal, tighten the mounting bracket screws evenly until
meter is snug to the panel along its short side. DO NOT OVER TIGHTEN, as
the rear of the panel may be damaged.

A

3.622" (92 mm)

Square Corners to 0.060"

B

1.772"

(45mm)

(1.5mm) Max Radius

Panel Cutout
to DIN 43700

Tolerances:

: +0.032 (+0.8mm)

-0.000 (-0.0mm)
B: +0.024 (+0.6mm)

-0.000 (-0.0mm)

Figure 1: 1/8 DIN Panel Cutout and Mounting

16

Gasket

Mounting

Bracket

Panel

Mounting

Screw

Removable
Connectors

KOBOLD Model MPV Pulse Input Rate/Totalizer Operating Instructions

Mounting Dimensions

Figure 2: Meter Dimensions - Side View

R

O

-

N

+

N

C

C

N

O

N

C

C

O

N

N

C

C

N

N

O

C

C

Figure 3: Meter Dimensions - Top View

17

KOBOLD Model MPV Pulse Input Rate/Totalizer Operating Instructions

Configuration for 12 or 24 VDC Power Option

Do not exceed voltage rating of the selected

Warning!

Meters equipped with the 12/24 VDC power option are shipped from
the factory ready to operate from 24 VDC.

To configure the meter for 12 VDC power:

1. Remove all the connectors.

2. Unscrew the back cover.

3. Slide the back cover about 1 inch.

4. Configure the J9 jumper, located behind the power connector, for 12
V as shown below.

Figure 4: Jumper Configuration for 12/24 VDC Power

configuration.

M-LINK

24 VDC

+

12 VDC

_

POWER

MAIN BOARD

J9

J9 CONFIGURATION

24 V

12 V

Factory
Default

18

KOBOLD Model MPV Pulse Input Rate/Totalizer Operating Instructions

Transmitter Supply Voltage Selection (P+, P-)

All meters, including models equipped with the 12/24 VDC power
option, are shipped from the factory configured to provide 24 VDC
power for the transmitter or sensor.

If the transmitter requires 5 or 10 VDC excitation, the internal jumper
J4 must be configured accordingly.

To access the voltage selection jumper:

1. Remove all the connectors.

2. Unscrew the back cover.

3. Slide the back cover about 1 inch.

4. Configure the J4 jumper, located behind the input signal connector,
for the desired excitation voltage as shown.

Figure 5: Transmitter Supply Voltage Selection

Connections

All connections are made to removable screw terminal connectors
located at the rear of the meter.

Use copper wire with 60°C or 60/75°C insulation
for all line voltage connections. Observe all safety
regulations. Electrical wiring should be performed
in accordance with all applicable national, state,

Caution!

and local codes to prevent damage to the meter
and ensure personnel safety.

19

KOBOLD Model MPV Pulse Input Rate/Totalizer Operating Instructions

Connectors Labeling

The connectors’ label, affixed to the meter, shows the location of all
connectors available with requested configuration.

Do not connect any equipment other than KOBOLD
Instruments’ expansion modules, cables, or meters

Warning!

to the RJ45 M-LINK connector. Otherwise damage
will occur to the equipment and the meter.

Figure 6: Connector Labeling for Fully Loaded MPV Pulse Input

Power Connections

Power connections are made to a two-terminal connector labeled POWER
in Figure 6. The meter will operate regardless of DC polarity connection.
The + and - symbols are only a suggested wiring convention.

POWER

-

+

AC or DC

POWER

Required External Fuse:

5 A max, 250 V Slow Blow

Figure 7: Power Connections

20

KOBOLD Model MPV Pulse Input Rate/Totalizer Operating Instructions

Signal Connections

Signal connections are made to a six-terminal connector labeled
SIGNAL in Figure 6. The COM (common) terminal is the return for the
input signals.

The following figures show examples of signal connections.
Setup and programming is performed through the front panel buttons.

Figure 8: Flowmeter Powered by Internal Power Supply

Figure 9: Flowmeter Powered by External Supply

Figure 10: Self-Powered Magnetic Pickup Coil Flowmeter

21

KOBOLD Model MPV Pulse Input Rate/Totalizer Operating Instructions

Figure 11: NPN open Collector Input

Figure 12: PNP Sensor Powered by Internal Supply

Figure 13: Switch Input Connections

22

KOBOLD Model MPV Pulse Input Rate/Totalizer Operating Instructions

Modbus RTU Serial Communications

Serial communications connection is made to an RJ45 connector labeled
M-LINK on Figure 6. For interfacing to the meter, use MPV-Option-B for
RS-485 or MPV-Option-F for USB. The same port is used for interfacing
with all expansion modules (e.g. external relays, digital I/O).

Relay Connections

Relay connections are made to two six-terminal connectors labeled
RELAY1 – RELAY4 in Figure 6. Each relay’s C terminal is common only
to the normally open (NO) and normally closed (NC) contacts of the
corresponding relay. The relays’ C terminals should not be confused with
the COM (common) terminal of the INPUT SIGNAL connector.

RELAY4 RELAY3

4365 21

CNONO NC NC C

Figure 11: Relay Connections

RELAY2 RELAY1

4365 21

CNONO NC NC C

23

KOBOLD Model MPV Pulse Input Rate/Totalizer Operating Instructions

Switching Inductive Loads

The use of suppressors (snubbers) is strongly recommended when
switching inductive loads to prevent disrupting the microprocessor’s
operation. The suppressors also prolong the life of the relay contacts.
Suppression can be obtained with resistor-capacitor (RC) networks
assembled by the user or purchased as complete assemblies. Refer to
the following circuits for RC network assembly and installation:

C

C

R

R

Figure 12: AC and DC Loads Protection

Choose R and C as follows:
R: 0.5 to 1 Ω for each volt across the contacts
C: 0.5 to 1 µF for each amp through closed contacts

Notes:

1. Use capacitors rated for 250 VAC.

2. RC networks may affect load release time of solenoid loads. Check
to confirm proper operation.

3.

Install the RC network at the meter's relay screw terminals. An RC
network may also be installed across the load. Experiment for best
results.

Use a diode with a reverse
breakdown voltage two to
three times the circuit
voltage and forward current
at least as large as the load
current.

Figure 13: Low Voltage DC Loads Protection

24

KOBOLD Model MPV Pulse Input Rate/Totalizer Operating Instructions

F4 Digital Input Connections

A digital input, F4, is standard on the meter. This digital input connected
with a normally open closure across F4 and COM, or with an active low
signal applied to F4.

Figure 14. F4 Digital Input Connections

4-20 mA Output Connections

Connections for the 4-20 mA transmitter output are made to the
connector terminals labeled MA OUT. The 4-20 mA output may be
powered internally or from an external power supply.

24 V

MA OUT

-

+

12-35 VDC

Power
Supply

RI- I+

132

RELAY1

321

MA OUT

+

4-20 mA Input

Remote Display,

Chart Recorder, Etc.

24 V

RI- I+

132

-

RELAY1

321

-

+

4-20 mA

Input Meter

Figure 15: 4-20 mA Output Connections

Analog Output Transmitter Power Supply

The internal 24 VDC power supply powering the analog output may be
used to power other devices, if the analog output is not used. The I+
terminal is the +24 V and the R terminal is the return.

25

KOBOLD Model MPV Pulse Input Rate/Totalizer Operating Instructions

External Relay & Digital I/O Connections

The relay and digital I/O expansion modules MPV-Option-R & MPV­Option-S are connected to the meter using the CAT5 cable provided with
each module. The two RJ45 connectors on the expansion modules are
identical and interchangeable; they are used to connect additional
modules to the system.

Note: The jumper located between the RJ45 connectors of the MPV-

Option-S must be removed on the second digital I/O module in
order for the system to recognize it as module #2.

Do not connect or disconnect the expansion
modules with the power on!

Warning!

More detailed instructions are provided with each
optional expansion module.

Figure 16: Expansion Modules & DIN Rail Mounting Kit

RLY5 RLY6 RLY7 RLY8

12

NO C NO C NO C NO C

345678

Figure 17: External Relays Module Connections

26