Red Lion IMH Instruction Manual

THE APOLLO INTELLIGENT METER SERIES

MODEL IMH INSTRUCTION MANUAL

INTRODUCTION

The Intelligent Meter for 5 Amp AC input (IMH) is another unit in our multi­purpose series of industrial control products that are field-programmable to solve
multiple applications. This series of products is built around the concept that the
end user has the capability to program different personalities and functions into
the unit in order to adapt to different indication and control requirements.

The Intelligent Meter which you have purchased has the same high quality
workmanship and advanced technological capabilities that have made Red Lion
Controls the leader in today’s industrial market.

Red Lion Controls has a complete line of industrial indication and control
equipment, and we look forward to being of service to you now and in the future.

CAUTION: Risk of Danger.

Read complete instructions prior to

installation and operation of the unit.

CAUTION: Risk of electric shock.

TABLE OF CONTENTS

GENERAL DESCRIPTION 2-3

A) Safety Summary
B) Block Diagram
C) Theory of Operation

PROGRAMMING AND OPERATING THE IMH

A) Programming the IMH
B) Program Modules #1 thru #9
C) Operating the IMH (Quick Programming)
D) Factory Configuration
E) Programming Example
F) Motor Monitoring Example

TOTALIZER/LINEARIZER/PEAK/VALLEY/TARE (Optional)

A) Totalizer Example
B) Linear Segmenting Example

ALARMS (Optional)

RE-TRANSMITTED ANALOG OUTPUT (Optional)

APPENDIX “A” - INSTALLATION AND CONNECTIONS

A) EMC Installation Guidelines
B) Select AC Power (115/230 VAC)

APPENDIX “B” - SPECIFICATIONS AND DIMENSIONS

APPENDIX “C” - TROUBLESHOOTING GUIDE

APPENDIX “D” - PROGRAMMABLE FUNCTIONS

APPENDIX “E” - ORDERING INFORMATION

2
3
4

4-21

4-5

6-17

18
19
20
21

22-24
22-23
23-24

25

26-27

28-30

29
29

31-32

33

34-35

36

-1-

GENERAL DESCRIPTION

The Apollo Intelligent 5 Amp AC Current Meter (IMH) accepts AC currents
up to 5 amps and precisely scales them into engineering units with high
resolution. With the use of an external 5 amp AC current transformer, of any
ratio, currents of any magnitude can be measured and displayed. The meter is
calibrated from the factory to display RMS value of a pure sinusoidal signal. The
input is AC coupledtoeliminate any DCeffectsin the signal. True RMSreadings
are not obtained from complex waveforms, such as square waves, signals that
have been rectified or chopped due to a circuit with an SCR or Triac outputs.
These kind of complex waveforms will cause average value readings.

Examples of such waveforms are shown below:

Example A is an undistorted sinewave and the IMH will indicate true RMS.

With the complex waveforms shown in Examples B and C, the meter will

indicate average value.

Internal resolution of 1 mA allows detection and indication of the smallest
signal change. A two Hz, two pole, low-pass filter coupled with programmable
digital filtering can be tuned to match the characteristics of any process. A digital
tare (re-zero) operation can beperformed at a touch of a button along with recall
of process peak and valley (max/min). State-of-the-art digital circuitry virtually
eliminates errors due to drift. A full complement of option packages is available
to fulfill many process applications.

The indicator features a choice of two different scaling procedures which
greatly simplifies initial set-up. A full 6-digit display accommodates virtually
any process engineering unit. English-style display prompts and front panel
buttons aid the operator through set-up and operation. A front panel lock-out
menu protects set-up data and operation modes from unauthorized personnel.
Programmable remote input “E1-CON” can be utilized to control a variety of
totalizing, alarm control, display hold and tare operations. All set-up data is
stored in E
power.

2

PROM, which will hold data for a minimum of 10 years without

An optionalintegrator (totalizer)/linearizer can be used to totalize or integrate
signals up toa maximum display value of999999. It features independent scaling
and a low signal cut-out to suit a variety of signal integration applications.
Programmable remote input “E2-CON” pin is included with this option and can
be utilized to control a variety of functions, such as totalizing, alarm control,
peak/valley readings, display hold or tare operations, simultaneously with
“E1-CON” pin. Additionally, nine slopes and offsets can easily be programmed
to linearize processes with non-linear outputs, such as square law devices.
Peak/valley (max/min) reading memory, and a signal re-zeroing (tare) function
are included and they are easily recalled and controlled by the front panel. All
readings are retained at power-down.

Optional dual relays with parallel solid state outputs are fully programmable
to operate ina wide varietyof modes tosuit many controlor alarm applications.

An optional 4 to 20 mA or 0 to 10 VDC re-transmitted analog output can be
scaled by the user to interface with a host of recorders, indicators and controllers.
The type of analog output is determined by the model ordered. (See Ordering
Information for available models.) The indicator has several built-in diagnostic
functions to alert operators of most any malfunction. Extensive testing of noise
interference mechanisms and full burn-in makes the indicator extremelyreliable
in industrial environments. The die-cast front bezel meets NEMA 4/IP65
requirements for washdown applications, when properly installed. Plug-in style
terminal blocks simplify installation and wiring change-outs.

SAFETY SUMMARY

All safety related regulations, local codes and instructions that appear in the
manual or on equipment must be observed to ensure personal safety and to
prevent damage to either the instrument or equipment connected to it. If
equipment is used in a manner not specified by the manufacturer, the protection
provided by the equipment may be impaired.

Do not use this unit to directly command motors,valves, orother actuators not
equipped with safeguards. To do so, can be potentially harmful to persons or
equipment in the event of a fault to the unit.

-2-

FIG. 1: BLOCK DIAGRAM

Note: Analog (-) and Alarm common are separate and isolated from the signal common.

The commons should NOT be tied together. Check label for wiring connections.

-3-

THEORY OF OPERATION

The IMH employs a microprocessor to perform the A/D conversion on the
input signal via a voltage-to-frequency converter. It digitally scales the result,
corrects for meter drift which may be present and then displays the result in a
6-digit display(5 for input, 6 for totalizer). Theinputs are filtered to enhance the
stability of the display. A non-volatile E

2

PROM memory device provides
permanent data retention for operating variables. The display consists of drivers
and 6-digit solid-state LEDs. The alarm option employs opto-isolators to isolate
the open collector devices from meter common. Operating in parallel, the relays
are type Form-C and are rated at 5 Amps. The analog option features a 12-bit
DAC and provides an output signal that is digitally scaled. The re-transmitted
output is isolated from meter common.

PROGRAMMING THE IMH

Prior to installing and operating the indicator, it may be necessary to change
the scaling to suit thedisplay units particular tothe application. Although the unit
has been pre-programmed at the factory, the set-ups will generally have to be
changed.

The indicator isunique in that two different scalingmethods areavailable. The
operator may choose the method that yields the easier and more accurate
calibration. The two scaling procedures are similar in that the operator keys-in
two display values and eitherkeys-in or applies a signal valuethat corresponds to
those display points (see FIG. 2). The location of the scaling points should be
near the process end limits, for the best possible accuracy. Once these values are
programmed (coordinates on a graph), the indicator calculates the slope and
intercept of the signal/display graph automatically. No span/zero interaction
occurs, making scaling a one-pass exercise. Basic scaling is complete after
decimal point selection, unit rounding (dummy zeros) and digital filtering level
selection. The following procedure should be followed to scale the indicator.

FIGURE 2: SLOPE DIAGRAM

Before actuallytrying toprogram the indicator, it is advised to organize all the
data for the programming steps to avoid any possible confusion and to read the
programming procedure entirely before proceeding.

To set-up the indicator, connect AC power and signal wires as outlined in the
connections section(Appendix “A”). Remove the jumperwire (ifinstalled) from
TBA #3 (PGM. DIS.). This will allow the operator to enter and modify all of the
indicator’s parameters. Press the front panel button labeled “P”, momentarily.
Briefly, the display will show “Pro” alternately flashing with “0”.Thisisthe
indicator’s programming mode. The programming mode isdivided intosections,
numbered 0-9, each of which can be individually accessed. The front panel
“UP” and “DOWN” arrow buttons can be used to select one of these numbers
and the “P” button used to enter the selected programming module. In all of the
programming modules, “UP” and “DOWN” are used to either select from a list
of choices or enter a value. The “P” button is used to save the new value and
progress to the next step within a module (Note: the new value takes effect when
“P” is pressed). Upon completionof a module, the indicatorreturns to the “Pro”
<>“0”. Pressing the “P” button at this point causes the unit to display “End”,
after which the unit returns to normal mode. The following table explains the
basic function of each step.

Note: < > This indicates that the display will alternate between the English

prompt and the actual data.

-4-

DISPLAY RESULT OF “P” BUTTON

DISPLAY

RESULT OF “P” BUTTON

“Pro”< >“0” - Causes the indicator to return to normal display mode. Any

changes to set-up data arepermanently storedin the E

2

PROM.

“Pro”< >“1” - Entry into this module allows the user to select the decimal point

position, unit rounding and scaling by the method of applying
the actual signal levels to the indicator that corresponds to the
programmed display values. Use this method when the
indicator is connected to the process and the process can be
brought to known levels. Alternately, a precision AC current
source may be substituted to simulate the process. A second
method is available in Pro 2.

“Pro”< >“2” - Entry into this module allows the user to select the decimal point

position and unitrounding, as in Pro 1,but themethod of scaling
differs in that the user keys in signal levels instead of applying
signals to the indicator. Use this method when the process
(signal source) is calibrated with known display values at
known signal levels.An alternate method isavailable in Pro1.

“Pro”< >“3” -Module #3allows the user toprogram what canbe accessedfrom

the front panel when the PGM. DIS. (Program Disable, TBA
#3) pin is connected to common. This feature protects critical
set-up data from accidental modification while allowing access
to setpoints and other functions. The front panel lock-out menu
(quick programming) includes setpoint modification, totalizer
resetting, zeroing the input and peak/valley resetting.

Note: The term “Quick Programming” is used to refer to the
ability to change the information that can be accessed from the
front panel when the “PGM. DIS.” terminal is connected to
“COMM.”.

“Pro”< >“4” - Module #4 programs the digital filtering level and the function of

the remote input “E1-CON” pin (TBA #4) and if the totalizer
option is installed the remoteinput “E2-CON”pin (TBA #7).The
functions of the remote E1 and E2 pins are the same and include
display hold, peak/valley modes, totalizer reset, alarm reset,
signal re-zero (tare) reading synchronization or print request.

“Pro”< >“5” - This module sets the decimal point position, time base, scale

factor and low signal disable function for the
totalizer/integrator.

“Pro”< >“6” - Thismodule allows programmingfor thebasic configurationof the

alarm option. The programming includes HI/LO acting, tracking,
alarm display, latched or auto-reset, assignment to either signal or
integrator/totalizer and alarm and hysteresis values.

“Pro”< >“7” - Not used

“Pro”< >“8” - This module allows digital scaling of the re-transmitted analog

output. Display values that correspond to 4 mA or 0 VDC and
20 mA or 10 VDC arekeyed-in to scale the output and it may be
assigned to either the signal or the integrator/ totalizer.

“Pro”< >“9”- This module is the service operations sequence and is not normally

accessed by the user. This step re-calibrates the basic input and is
used to compensate for long-term drift. Execution of this module
should be done by technicians with the proper equipment in
accordance with a maintenance plan of yearly re-calibrations. A
code number entry step is used to protect frominadvertent entries.
Also, there is a number of other access codes, which provide test
and set-up changes as an aid in troubleshooting.

-5-

PROGRAMMING MODULE #1 - SCALE BY SIGNAL LEVEL METHOD

PROGRAM DECIMAL POINT POSITION

Select the desired decimal point position of the scaled display by pressing

either the “Up” or “Down” button.

Note: Whatever decimal point is selected will appear in succeeding

programming steps. Also, the “P” button must be pressed after each step to
enter the desired data and to proceed to the next step.

“dECPNt”<>“0”

“0.0”
“0.00”
“0.000”
“0.0000”

PROGRAM ROUNDING INCREMENT AND RIGHT HAND
DUMMY ZEROS

Rounding values other than one cause the scaled number to ‘round’ to the
nearest rounding increment selected (ie. rounding of ‘5’ causes ‘122’ to round to
‘120’ and ‘123’to round to ‘125’). If the process is inherentlyjittery, the display
value may be rounded to a value higher than one. If the range of the process
exceeds therequired resolution,(ex. 0-3.000 AMPS AC , but only 0.010 AMP AC
resolution required), a rounding increment of 10 will effectively make the
display more stable. This programming step is usually used in conjunction with
programmable digital filtering (Pro 4) to help stabilize display readings. (If

display stability appearsto be a problemand thesacrifice indisplay resolution is
unacceptable, program higher levels of digital filtering or increase the level of
process dampening.) Rounding increments of 10, 20, 50, and 100 may also be

used to add “dummy zeros” to the scaled readings, as desired.

“round ”< > “1”

“2”
“5”
“10”
“20”
“50”
“100”

At this stage,a choice of eitherto returnto “Pro0” orto continuewith scaling

of the display is offered.

“SCALE” < > “yES”

“NO”

If “YES” was selected for theprevious step, the scaling procedureis started. In
order to scale the indicator, two signal level values and two display values that
correspond to the signal values must be known. These four values are used to
complete the scaling operation. An example of a signal-display pair is listed
below:

0.00 % @ 0.000 Amps AC AND 100.00 % @ 5.000 Amps AC
Scaling point #1 Scaling point #2

KEY-IN DISPLAY VALUE FOR SCALING POINT #1

“dSP 1” < > “-99999” to “99999” (ex. 0.00 %)

APPLY SIGNAL TO INDICATOR FOR SCALING POINT #1

The meter will indicate the actual amount of signal being applied to theinput.
However, the indicator still retains the previously applied value until “P” is
pressed, at which time the new value is stored. Pressing either the “UP” or
“DOWN” button causes the previous value to remain programmed in the unit.

“INP 1” < > “0.000 to 5.000 Amps AC” (ex. 0.000)

KEY-IN DISPLAY VALUE FOR SCALING POINT #2

“dSP 2” < > “-99999” to “99999” (ex. 100.00 %)

APPLY SIGNAL TO INDICATOR FOR SCALING POINT #2

The meter will indicate the actual amount of signal being applied to theinput.
However, the indicator still retains the previous value until “P” is pressed, at
which time the new valueis stored.Pressing either the “UP” or “DOWN”button
causes the previous value to remain programmed in the unit.

“INP 2”< > “0.000 to 5.000 Amps AC” (ex. 5.000)

-6-

The indicatorwill be ready to accept more scaling points (if more aredesired)
for multisegment linearization. The quantity and location of the linearization
points should be chosen very carefully to best utilize the segments available.
Refer to the section on linearization for a discussion on this matter.

At this stage, scaling is complete. The indicator will automatically calculate
the slope and offset of the display units. After completing Pro 1, it is
recommended that the scaling operation be verified by applying various signals
and checking the displayed reading.

PROGRAM NUMBER OF LINEAR SEGMENTS

This programming step loads in the number of linear segments desired for
multisegment linearization. If single slope scaling is desired, input “1” for this
step. If two segments aredesired, input “2”, etc.You must haveone more scaling
point known than the number of segments selected (ie. 1 segment = 2 points, 2
segments = 3 points, etc). This step may be used to deactivate previously
programmed segments where lower segments would override higher segments.

(ex. changing “SEGt” from 5 to 3 causes slopes 4 & 5 to be replaced by an
extension of slope 3).

“SEGt”< >“1” - “9”

If “1” was selected, the indicator will return to “Pro 0” since scaling for the
first segment was already completed. Otherwise, a choice of either returning to
“Pro 0” or commencing with the multislope linearization scaling is offered.

“SCALE” < > “yES”

“NO”

KEY-IN DISPLAY VALUE FOR POINT #3

If “YES” was selected, the display value for the third point is entered.
Otherwise, the indicator returns to “Pro 0”.

“dSP 3” < > “-99999” to “99999”

APPLY SIGNAL TO INDICATOR FOR POINT #3

The signal level value for point 3 is applied.

“INP 3” < > “0.000 to 5.000 Amps AC”

The sequence of entering display and signal values continues with “dSP 4”,
“INP 4”, “dSP 5”, etc. until the number programmed for “SEGt” is reached.
Upon completion, the indicator is scaled to the multiple segments. It is
recommended that the scaling be checked by exiting the programming mode and
applying signal values and verifying for correct display values.

* Note As the “UP” or “DOWN” button is continually held in, the display will

progressively increment faster until the fourth most significant digit is

changing at a rate of 1 number per second.

-7-

PROGRAMMING MODULE #2 - SCALE BY KEY-IN METHOD

PROGRAM DECIMAL POINT POSITION

Select the desired decimal point position of the scaled display by pressing

either the “Up” or “Down” button.

Note: Whatever decimal point is selected will appear in succeeding

programming steps. Also, the “P” button must be pressed after each step to
enter the desired data and to proceed to the next step.

“dECPNt”<>“0”

“0.0”
“0.00”
“0.000”
“0.0000”

PROGRAM ROUNDING INCREMENT AND RIGHT HAND
DUMMY ZEROS

Rounding values other than one cause the scaled number to ‘round’ to the
nearest rounding increment selected (ie. rounding of ‘5’ causes ‘122’ to round to
‘120’ and ‘123’to round to ‘125’). If the process is inherentlyjittery, the display
value may be rounded to a higher value than one. If the range of the process
exceeds the required resolution, (ex. 0-3.000 AMPS AC, but only 0.010 AMP AC
resolution required), a rounding increment of 10 will effectively make the
display more stable. This programming step is usually used in conjunction with
programmable digital filtering (Pro 4) to help stabilize display readings. (If

display stability appearsto be a problemand thesacrifice indisplay resolution is
unacceptable, program higher levels of digital filtering or increase the level of
process dampening.) Rounding increments of 10, 20, 50, and 100 may also be

used to add “dummy zeros” to the scaled readings, as desired.

“round” < > “1”

“2”
“5”
“10”
“20”
“50”
“100”

At this stage,a choice of toeither returnto “Pro0” orto continuewith scaling

of the display is offered.

“SCALE” < > “yES”

“NO”

If “YES” was selected for theprevious step, the scaling procedureis started. In
order to scale the indicator, two signal level values and two display values that
correspond to the signal values must be known. These four values are directly
entered into the indicator. An example of a signal-display pair is listed below:

0.00 % @ 0.000 Amps AC AND 100.00% @ 5.000 Amps AC
Scaling point #1 Scaling point #2

KEY-IN DISPLAY VALUE FOR SCALING POINT #1

“dSP 1”< >“-99999” to “99999” (ex. 0.00 %)

KEY-IN SIGNAL VALUE FOR SCALING POINT #1

“INP 1” < > “0.000 to 5.000 AMPS AC” (ex. 0.000)

KEY-IN DISPLAY VALUE FOR SCALING POINT #2

“dSP 2” < > “-99999” to “99999” (ex. 100.00%)

KEY-IN SIGNAL VALUE FOR SCALING POINT #2

“INP 2” < > “0.000 to 5.000 AMPS AC” (ex. 5.000)

The indicatorwill be ready to accept more scaling points (ifmore are desired)
for multisegment linearization. The quantity and location of the linearization
points should be chosen very carefully to best utilize the segments available.
Refer to the section on linearization for a discussion on this matter.

At this point, scaling is complete. The indicator will automatically calculate
the slope and offset of the display units. After completing Pro 2, it is
recommended that the scaling operation be verified by applying various signals
and checking the displayed reading.

-8-

PROGRAM NUMBER OF LINEAR SEGMENTS

This programming step loads in the number of linear segments desired for
multisegment linearization. If single slope scaling is desired, program “1” for
this step. If two segments are desired,program “2”, etc. You must haveone more
scaling point known than the number of segments selected (ie. 1 segment = 2
points, 2 segments = 3 points, etc). This step may also be used to deactivate
previously programmed segments where lower segments would override higher
segments. (ex. changing “SEGt” from 5 to 3 causes slopes 4 & 5 to be replaced

by an extension of slope 3).

“SEGt”<>“1-9”

If “1” was selected, the indicator will return to “Pro 0” since scaling for the
first slope was already completed. Otherwise,a choiceof either returning to“Pro
0” or commencing with the multislope-linearization scaling is offered.

If “yes” was selected, the display value for the third point is entered.
Otherwise, the indicator returns to “Pro 0”.

“SCALE” < > “yES”

“NO”

KEY-IN DISPLAY VALUE FOR SCALING POINT #3

“dSP 3”< >“-99999” to “99999”

KEY-IN INPUT VALUE FOR SCALING POINT #3

“INP 3”< >“0.000 to 5.000 AMPS AC”

The sequence of entering display and signal values continues with “dSP 4”,
“INP 4”, “dSP 5”, etc.until thenumber programmed for “SEGt” is reached. Itis
recommended that the scaling be checked by exiting the programming mode and
applying signal values and verifying for correct display values.

Note: As the “UP” or “DOWN” button is continually held in, the display will

progressively increment faster until the fourth most significant digit is

changing at a rate of one number per second.

-9-

PROGRAMMING MODULE #3 - PROGRAM FUNCTIONS ACCESSIBLE WITH FRONT PANEL LOCKOUT

This programming module programs what is accessible through the front
panel when the PGM.DIS. pin is connected to common (COMM. TBA #5).

Note: The term“Quick Programming” is used to referto the ability tochange the

information that can be accessed from the front panel when the “PGM.DIS.”

terminal is connected to “COMM.”.

DISPLAY ALARM VALUES

If the alarm option is installed, this selects whether the alarm values will or
will not be displayed.

“dSP AL” < > “yES” or “NO”

ENTER ALARM VALUES *

If “YES” was selected for display alarmvalues, this will select if alarm values
may be modified from the front panel. (If “NO” was selected for display alarm

values, then this step will default to “NO” and will not be displayed for
selection.)

“ENt AL” < > “yES” or “NO”

DISPLAY HYSTERESIS VALUES

If the alarm option is installed, this selects whether the hysteresis values will
or will not be displayed.

“dSPHYS” < > “yES” or “NO”

ENTER HYSTERESIS VALUES *

If “YES” was selected for display hysteresis values, this selects whether
hysteresis values may be modified from the front panel. (If “NO” was selected

for display hysteresis values, then this step will default to “NO” and will not be
displayed for selection.)

“ENtHYS” < > “yES” or “NO”

RESET LATCHED ALARMS

If thealarm option isinstalled, thiswill select if a latched alarm(s) can be reset

from the front panel.

“rSt AL” < > “yES” or “NO”

DISPLAY PEAK/VALLEY MEMORY BUFFER

If the totalizer/linearizer option is installed, this selects whether peak and

valley buffers will be displayed.

“dSPbUF” < > “yES” or “NO”

RESET PEAK/VALLEY MEMORY BUFFER *

If “YES” was selected for the previous step, this selects whether the peak and

valley buffersmay bereset fromthe front panel. (If “NO” was selected, then this

step defaults to “NO” and will not be displayed for selection.)

“rStbUF” < > “yES” or “NO”

SELECT DISPLAY **

If the totalizer/linearizer option is installed, this selects whether the display
can be switched from input display to total display and from totaldisplay to input
display.

Note: When “NO” is selected, the display mode that was being displayed before

entering programming, will be the only display accessible.

“SELdSP” < > “yES” or “NO”

* This sequence may be subject to being locked out due to other

programmed sequences.

** This function operates independent of the state of the “PGM.DIS.” pin.

-10-