AMALGAMATED INSTRUMENT PM4-TCR Guide

PM4-TCR
Process Monitor/Controller
Operation and Instruction Manual
(inputs from RTDs, Thermocouple,
4-20mA or direct mV)

Table of Contents
Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
Mechanical Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
Electrical Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
Power supply connections. . . . . . . . . . . . . . . . . . . . . . . . . 6
Input sensor wiring . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
Relay connections. . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
Input link settings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
Explanation of Functions. . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
Error Messages . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18
Function Table for fully optioned instrument . . . . . . . . . . . . . . . . 19
Calibration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22
Input/Output Configuration . . . . . . . . . . . . . . . . . . . . . . . . . . 25
Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26
Setting up the relay PI controller . . . . . . . . . . . . . . . . . . . . . . . 27
Guarantee and Service . . . . . . . . . . . . . . . . . . . . . . . . . . . . 34
TC09 17F15 Page 2 of 34 PM4TCRMAN-1.7.0

1 Introduction
This manual contains information for the installation and operation of the PM4-TCR Monitor. The
PM4 is a general purpose monitor which may be configured to accept inputs from 100Ωor 1000ΩRTDs,
thermocouple types B, E, J, K, N, R, S or T, 4-20mA or direct mV input in ranges up to 200mV.
Theinstrumentmaybecalibratedtodisplaythetemperaturein°Cor°Forabsolute(degreesK)and
if required to display temperature units e.g. 22”C. A standard inbuilt relay provides an alarm/control
function, optional extra relays, retransmission (signal or dual channel) andexcitation voltage may also be
provided. Refer to the separate “PM4 Panel Meter Optional Output Addendum” booklet supplied when
optional outputs are fitted. Open circuit RTD or thermocouple inputs will cause an error message to appear
on the display "----" for RTD inputs or "OPEN" for thermocouple inputs. Any relay with a high setpoint
value set will be activated when either of these error messages is seen.
Unless otherwise specified at the time of order, your PM4 has been factory set to a standard
configuration. Like all other PM4 series instruments the configuration and calibration is easily changed by
the user. Initial changesmay require dismantling the instrument to alter PCBlinks, other changes aremade
by push button functions.
Fullelectrical isolation betweenpower supply, input voltage or currentandretransmission outputis
provided by the PM4, thereby eliminating grounding and common voltage problems. This isolation feature
makes the PM4 ideal for interfacing to computers, PLCs and other data acquisition devices
TheversatilePM4hasvariousfrontpaneloptions,thereforeinsomecasesthepushbuttonsmaybe
located on the front panel as well as the standard rear panel configuration.
The PM4seriesof Panel Mount Monitorsare designed for high reliability in industrial applications.
The high brightness LEDdisplay provides good visibility, even in areas with high ambient light levels. The
high contrast LCD displays provide good visibility and are ideal for batterypowered applications.
The^andvpushbuttonscanbe used totoggle tothecold junction temperature (preceded bythe
message coId) or the actualmVinput(preceded by themessage INPt) when using thermocoupleormV
input. The INPt display for 4-20mA input does not give a valid reading.
Inputs & outputs
Page 3 of 34 PM4TCRMAN-1.7.0
Alarm annunciator LEDs
(5 digit LED display only) Setup pushbuttons
(5, 6 & 8 digit LED
display models only)
Input:
100 Ohm RTD (Pt100)
1000Ohm RTD (Pt1000)
Thermocouple type B, E,
J, K,N, R, S or T.
4-20mA or
direct mV input (in ranges
up to200mV)
Output:
Optional outputs:
1 x setpoint relay
18V transmitter supply
(AC powered models only)
Up to six extra setpoint relays.
Analog output (single or dual channel)
Serial comms (RS232 or RS485)
BCD/binary retransmission
P F
A1
A2
A3
A4
Temperature C
o

2 Mechanical Installation
If a choice of mounting sitesis available then choose a site asfar away as possible from sources of
electrical noise such as motors, generators, fluorescent lights, high voltage cables/bus bars etc. An IP65
access cover which may be installed on the panel and surrounds is available as an option to be used when
mounting the instrumentin damp/dusty positions.A wall mountcase is available, as an option, for situations
in which panelmountingis either not available or not appropriate. A portable carrycase isalso available, as
an option, for panel mount instruments.
Prepareapanelcutoutof45mmx92mm+1mm/-0mm(seediagrambelow).Inserttheinstrument
intothecutoutfromthefrontofthepanel.Then,fromtherearoftheinstrument,fitthetwo mountingbrackets
into the recess provided (see diagram below). Whilst holding the bracket in place, tighten the securing
screws being careful not to over-tighten, as this may damage the instrument.
Hint:usetheelasticbandprovidedtoholdthemountingbracketinplacewhilsttighteningsecuringscrews.
Page 4 of 34 PM4TCRMAN-1.7.0
92mm
45mm PANEL CUT OUT 92mm
45mm
PANEL
CUT
OUT
115mm
104mm
53mm
44mm
96mm
9mm
9.5mm
max
48mm 91mm
111mm
10mm
Mounting bracket
(2 off)
Horizontal mounting
Vertical mounting
(bar graph displays)

3 Electrical Installation
The PM4 PanelMeter is designed for continuous operation and nopower switch is fitted to the unit.
Itisrecommendedthatanexternalswitchandfusebeprovidedtoallowtheunittoberemovedforservicing.
The terminal blocks allow for wires of up to2.5mm
2
(terminals 1 to 6 and option outputs) or 1.5mm
2
(terminals 7 to 12) to be fitted. Connect the wiresto the appropriate terminals as indicated below. Refer to
other details provided in this manual to confirm proper selection of voltage, polarity and input type before
applying power to the instrument. When power is applied the instrument will cycle through a display
sequence, indicating the software version and other status information, this indicates that the instrument is
functioning. Acknowledgementof correct operation may be obtained byapplying an appropriate input to the
instrument and observing the resultant reading.
Page 5 of 34 PM4TCRMAN-1.7.0
SETUP
PUSHBUTTONS
1 2 3 4 5 6 7 89 101112
MAINS EARTH
AC ACTIVE
AC NEUTRAL COM
RELAY 1
N/O
(DC+)
(DC-)
4-20mA in
GND
3W/Transmitter supply +
In +
Gnd
Remote input
A B HC D E F J K
Instrument Rear Panel
1
3
2
5
6
7
8
9
10
11
12
MAINS EARTH
RELAY 1 COM
RELAY 1 N/O
REMOTE INPUT
GROUND
4-20mA in
3W / TRANSMITTER +
GROUND
IN +
240VAC NEUTRAL
240VAC ACTIVE
PM4-TCR-240-5E SERIALNo.
Instrument data label (example)

3 .1 Power supply connections
The power supply for the instrument is factory fitted and is of a fixed type. If you are unsure of the
supplyrequirementforyourinstrumentitcanbedeterminedbythemodelnumberontheinstrumentlabel:-
PM4-TCR-240-...... Requires 240VAC
PM4-TCR-110-...... Requires 110VAC
PM4-TCR-32-...... Requires 32VAC
PM4-TCR-24-...... Requires 24VAC
PM4-TCR-DC-...... Requires between 12 and 48VDC
PM4-TCR-DCH-...... Requires between 50 and 100VDC
3 .2 Input sensor wiring
3 .3 Relay connections
ThePM4is supplied withonealarmrelayas standard with connectionsonpins 5and6,extrarelays
are optionally available. The relay is a single pole, single throw type and is rated at 5A, 240VAC into a
resistive load. The relay contact is voltage free and may be programmed for normally open or normally
closed operation.
3 .4 Input link settings
See the "Input/Output Configuration" chapter for instructions on removing the input board.
Page 6 of 34 PM4TCRMAN-1.7.0
IN + IN + IN + 4-20
IN
4-20
IN 4-20
IN
12 12 12 9
9 9D
11 11 11 8
F
10 8
10 10
GND GND GND GND3W
V+ V+ V- GND
3W
RTD RTD
2 WIRE RTD
WIRE
LINK
WIRE
LINK
3WIRERTD THERMOCOUPLE OR
DIRECT mV INPUT 4-20mA INPUT
2 WIRE 4-20mA INPUT USINGSTANDARD
18V UNREGULATEDTRANSMITTER SUPPLY
NOTE: AN INTERNAL LINK SETTING IS
REQUIRED TO OBTAIN V+ AT TERMINAL 10
2WIRE 4-20mA INPUT
USING OPTIONAL INTERNAL
24VDC (+/-12V) TRANSMITTER SUPPLY
TRANSMITTER SUPPLY
4-20mA
TRANSMITTER 4-20mA TRANSMITTER
4-20mA
4-20mA
4-20mA
Note: Only one input type can be used at any one time - see function
INPt tYPE
3W
3W
3W
+18
+18
+18
RTD input selected
+18V unregulated
transmitter supply selected
(available on AC supply
models only)

4 Explanation of Functions
The PM4 setup and calibration functions are configured through a push button sequence. Two
levels of access are provided for setting up and calibrating:-
FUNC mode (simple push button sequence) allows
accesstocommonlysetupfunctionssuchasalarmsetpoints.
CAL mode (power up sequence plus push button
sequence) allows access to all functions including calibration
parameters.
The three push buttons located at the rear of the
instrument (also at the front onsome display options) are used
to alter settings. Once CAL or FUNC mode has been entered
you can step through the functions, by pressing and releasing
the Fpush button, until the required function is reached.
Changes to functions are made by pressing the ^or vpush
button (in some cases both simultaneously) whenthe required
function is reached.
Page 7 of 34 PM4TCRMAN-1.7.0
Process Units
Front view of instrument
SETUP
PUSHBUTTONS
SETUP
PUSH BUTTONS
Rear view of instrument
1 2 3 4 5 6 7 8 9 10 11
SETUP
PUSHBUTTONS
F
F
^
^
v
v
Entering Mode
CAL
Entering Mode
FUNC
1. Remove power from
the instrument. Hold in the
button and reapply power.
The display will briefly indicate
as part of the
"wake up messages" when
the message is seen
you can release the
button. Move to step 2 below.
2.When the "wake up"
messages have finished
and the display has settled
down to its normal reading
press, then release the
button.
Move to step 3 below.
1.When the "wake up"
messages have finished
and the display has settled
down to its normal reading
press, then release the
button.
3.Within 2 seconds of
releasing the button
press, then release
the and buttons
together. The display will
now indicate followed
by the first function.
2.Within 2 seconds of
releasing the button
press, then release
the and buttons
together.The display will
now indicate followed
by the first function.
^
^
^ ^
FUNC
FUNC
F
F
F
FF
CAL
CAL
Note:If step 1 above has been completed then the
instrument will remain inthis modestate until
power is removed. i.e. there is no need to repeat step 1
when accessing function unless power hasbeen removed.
CAL
No special power up procedure
is required to enter mode.FUNC

Function Description
C.SEt Analog control setpoint - seen only when the analog retransmission option is fitted and
REC ctrI is set to on. Refer to the separate “PM4 DIN Rail Meter Optional Output
Addendum” booklet supplied when this option is fitted.
AxSP Alarm relay setpoint- displaysandsets the alarm relayPIcontrolsetpoint. This function is
only seen when the alarm operating mode is set to pulse width or frequency PI control
operation. Refer to the “Setting up the relay PI controller” chapter if this mode is used.
AxLo Alarm low setpoint - displays and sets the low setpoint value for the designated alarm
relay. The low alarm setpoint may be disabled by pressing the ^and vpushbuttons
simultaneously. Whenthe alarm is disabled the displaywill indicate OFF .Use ^or vto
adjust the setpoint value if required. The alarm will activate when the displayed value is
lower than the AxLo setpoint value. Each relay may be configured with both a low and
highsetpoint if required, if so the relay will be activated when the display reading moves
outside the band set between low and high setpoints.
The PM4 has an easy alarm access facility which allows access to the alarm setpoints
simply bypressing the Fbutton at the front or rearofthe instrument. Thefirstsetpoint will
thenappear and changesmaybemade to this setpoint via the ^orvbuttons.Pressthe
F button to accept any changes or to move on to the next setpoint.
The instrument must be set in the manner described below to enable the easy access
facility (if required):
1.TheR.INP functionmustbesetto SP.ACortheACCS functionmustbesettoEASY.
2.Atleastonealarmmusthaveasetpoint,nothingwillhappenifallthealarmsetpointsare
set to OFF.
3. The SP.AC function must be set to allow access to the relays required e.g. if set to
A1-2 thentheeasyaccesswillworkonlywithalarmrelays1and2evenifmorerelaysare
fitted.
4.The instrumentmustbein normalmeasuremode i.e. if the instrumentispowered up so
thatitisinCAL modethenthe easyaccess willnot function.Ifin doubt thenremovepower
from the instrument, wait for a few seconds then apply power again.
5. If the easy access facility is used then the only way to view or alter any other function
settings isto powerupviaCAL mode i.e.noentry toFUNC mode unless the instrument is
powered up in CAL mode.
AxHi Alarm high setpoint - displays and sets the high setpoint value for the designated alarm
relay. The high alarm setpoint may be disabled by pressing the ^and vpushbuttons
simultaneously. When the alarm is disabled the display will indicate OFF. Use ^or vto
adjust the setpoint value if required. The alarm will activate when the displayed value is
higher than the AxHi setpoint value. Each relay may be configured with both a low and
high setpoint if required, if so the relay will be activated when the display reading moves
outside the band set between low and high setpoints.
If the display shows the "----" or "OPEN" error message then any relay with a high
setpoint value will activate.
Page 8 of 34 PM4TCRMAN-1.7.0

Function Description
AxHY Alarmhysteresis[deadband])-displaysandsetsthealarmhysteresislimitandiscommon
for both high and low setpoint values. The hysteresis value may be used to prevent too
frequent operation of the setpoint relay when the measured value stays close to the
setpoint. Without ahysteresis setting (AxHY setto zero) the alarm will activate when the
display value goes above the alarm setpoint (for high alarm) and will reset when the
display value falls below the setpoint, this can result in repeated on/off switching of the
relay at around the setpoint value. The hysteresis setting operates as follows:
In the high alarm mode, oncethe alarm is activated the input must fall below the setpoint
value minus the hysteresis value to reset the alarm.
e.g. if A1Hi is set to 50.0 and A1Hy is set to 3.0 then the setpoint output relay will
activate once the display value goes above 50.0 and will reset when the display value
goes below 47.0 (50.0 minus 3.0).
In the low alarm mode, oncethe alarm is activated theinputmust rise above the setpoint
value plus the hysteresis value to reset the alarm.
e.g. if A1Lo is set to 20.0 and A1Hy is set to 10.0 then the alarm output relay will
activate when the display value falls below 20.0 and will reset when the display value
goes above 30.0 (20.0 plus 10.0).
The hysteresis units are expressed in displayed engineering units.
Axtt Alarm trip time - displays and sets the alarm trip time and is common for both alarm high
andlow setpoint values. Thetrip timeis the delay timebefore the alarm relay will activate,
or trip, when an alarm condition is present. The alarm condition must be present
continuously for the trip time period before the alarm will trip. This function is useful for
preventing an alarm trip dueto short non critical deviations from setpoint. The trip time is
selectable over 0.0 to 999.9 seconds.
Axrt Alarm resettime -displaysand sets the alarm relayreset time.With the alarmcondition is
removed the alarm relay will stay in its alarm condition for the time selected as the reset
time. The reset time is selectable over 0.0 to 999.9 seconds.
Axn.o or
Axn.c Alarm x normally open or normally closed - displays and sets the setpoint alarm relay action to normally open (de-energised) or normally closed (energised), when no alarm
conditionispresent.A normallyclosedalarmisoftenusedtoprovideapowerfailurealarm
indication.
AxLtch Alarm x latching operation. If set to OFF the alarm relays will not latch i.e. they will
automatically reset when the display moves out of alarm condition. If set to on the relay
will latch and will not reset until either the remote input or Pbutton is used to clear the
latchconditionorifpowerisremoved.TheR.INP orP.but functionmustbesettoA.cIr
to clear the latch setting, see the R.INP function A.cIr function for a more detailed
description of the operation of this function.
Ifthe5digitdisplaywithalarmannunciatorLED'sis used thealarmannunciatorsoperates
in the following manner:
Light off - display not in alarm condition.
Lightflashingwith"on"timelongerthan"off"time-displayin alarmcondition,relaylatched
and latch not cleared.
Light flashing with "off" time longer than "on" time - display not in alarm condition, relay
latched and latch not cleared.
Light solidly on - display in alarm condition and latch cleared i.e. relay will now reset
automatically when the display value moves out of the alarm condition.
Page 9 of 34 PM4TCRMAN-1.7.0

Function Description
Ax.SP,
Ax.t1,
Ax.t2 etc.
Relay operation independent setpoint or trailing setpoint - each alarm may be
programmed to operate withan independent setpoint setting or may be linked (or trailing)
tooperateatafixeddifferencetoanotherrelaysetpoint.Theoperationisasfollows:Alarm
1(AI)isalwaysindependent.Alarm2(A2)maybeindependentormaybelinkedtoAlarm
1. Alarm 3 (A3) may be independentor may belinked toAlarm1 or Alarm2. Alarm 4 (A4)
may be independent or may be linked to Alarm 1, Alarm 2 or Alarm 3. The operation of
eachalarmisselectablewithintheFunctionSetupModebyselecting,forexample,(Alarm
4)A4.SP = Alarm4 normalsetpointor A4.t1 = Alarm4 trailing Alarm1orA4.t2 =Alarm
4 trailing Alarm 2 or A4.t3 = Alarm 4 trailing Alarm 3. For trailing set points the setpoint
value isenteredasthe difference from thesetpointbeingtrailed.Ifthetrailing setpointis to
operate ahead of the prime setpoint then the value is entered as a positive number and if
operating behind the prime setpoint then the value is entered as a negative number. For
example, with Alarm 2 set to trail alarm 1, if A1Hi isset to 1000 and A2Hi is set to 50
thenAlarm1 willactivateat1000and alarm 2willactivate at1050(i.e.1000+ 50).IfAlarm
2 had been set at -50 then alarm 2 would activate at 950 (i.e. 1000 - 50). See the trailing
alarm table which follows.
AxOPEr Alarm relay operating mode - this function allows selection of standard alarm on/off
setpointoperation(Ax.AL)usingthealarmfunctionsdescribedinthischapterorPIcontrol
operation (AxtP or Axfr). Refer to the "Setting up the relay PI controller" appendix for
details of the PI control operations and functions.
brgt Display brightness - displays and sets the digital display brightness. The display
brightness is selectable from 1 to 15, where 1 = lowest intensity and 15 = highest
intensity. This function is useful for improving the display readability in dark areas or to
reduce power consumption.
dULL Remote display brightness - displays and sets the level for remote input brightness
switching, see R.INP function. When the remote input is set to dULL the remote input
canbe usedto switch between the displaybrightnesslevel set by the brGt function and
the displaybrightnesssetby thedULL function.Thedisplaybrightnessisselectablefrom
0to 15, where 0= lowest intensity and 15 = highest intensity. This function is useful in
reducing glare when the display needs to be viewed in both light and dark ambient light
levels.
rEC_ Analog output low value - seen only when analog output option fitted. Refer to the
separate “PM4 Panel Meter Optional Output Addendum” booklet supplied when this
option is fitted. Displays and sets the analog retransmission (4-20mA, 0-1V or 0-10V, link
selectable)outputlowvalue(4mAor0V)indisplayedengineeringunits.e.g.ifitisrequired
to retransmit 4mA when the display indicates 0then select 0inthis function via the ^or
vbutton.
rEC~ Analog output high value - seen only when analog output option fitted. Refer to the
separate “PM4 Panel Meter Optional Output Addendum” booklet supplied when this
option is fitted. Displays and sets the analog retransmission (4-20mA, 0-1V or 0-10V, link
selectable) output high value(20mA, 1V or 10V) in displayed engineering units. e.g.if itis
required to retransmit 20mA when the display indicates 500 then select 500 in this
function via the ^or vbutton.
rEC_ Ch 2 Analog output 2 low value - seen only when dual analog output option fitted. See REC_
above for a description.
rEC~ Ch 2 Analog output 2 high value- seen only when dual analog output optionfitted. See REC~
above for a description.
The functions which follow are accessible via CAL mode only.
Page 10 of 34 PM4TCRMAN-1.7.0
Trailing Alarm Table
Showing Possible Alarm Assignments
A2 A3 A4
A1 A2.t1 A3.t1 a4.t1
A2 A3.t2 A4.t2
A3 a4.t3

Function Description
bAr_ Bargraphdisplaylowvalue-seenonlyinbargraphdisplayinstruments.Displaysandsets
the bar graph low value i.e. the value on the 7 segment display at which the bargraph will
start to rise. This may be independently set anywhere within the display range of the
instrument.
Note: ThebAr~ and bAr_ settingsarereferenced from the7segmentdisplayreadings,
notthebargraphscalevalues.Thebargraphscalemayscaleddifferentlytothe7segment
display, asshown on the right where bargraph scale is0 to 100 yet the display isshowing
475.3. In this example the bargraph scale may be indicating a percentage whilst the 7
segment display is indicating actual temperature.
bAr~ Bargraph display high value - seen only in bargraph display instruments.
Displaysandsetsthe bargraph highvaluei.e.thevalueonthe7 segmentdisplayatwhich
the bargraph will reach its maximum indication (all LED’s illuminated). May be
independently set anywhere within the display range of the instrument.
bAr tYPE Bar graph display operation mode - seen only in bargraph display instruments.
Allows selection of bargraph operation mode choices are:
bAr - conventional solid bargraph display i.e. all LED’s illuminated when at full
scale. When scaling the display use the bAr_ and bAr~ functions e.g.bAr_ =0
and bAr~ =100 will give a bargraph with no segments lit at a 7 segment display
reading of 0and all segments lit with a 7 segment display reading of 100.
S.dot - single dot display. A single segment will be lit to indicate the input
readings position on the scale. When scaling the display use the bAr_ and
bAr~ functions e.g.bAr_ =0 and bAr~ =100 will give a bargraph with the
bottomsegment lit at a 7 segment display reading of 0and the top segment lit
with a 7 segment display reading of 100.
Note: this could also be set up as a centre zero singledot display by entering a
negative value and positive value. e.g. bAr_ =-100, bAr~ =100.
d.dot - double dot display. Two segments will be lit to indicate the input reading
position on the scale. The reading should be taken from the middle of the two
segments. When scaling the display use the bAr_ and bAr~ functions e.g.
bAr_ =0 and bAr~ =100 will give a bargraph with the bottom two segments lit
at a 7 segment display reading of 0and the top two segments lit with a 7 segment
display reading of 100.
Note: this could also be set up as a centre zero singledot display by entering a
negative value and positive value. e.g. bAr_ =-100, bAr~ =100.
C.bAr - centre bar display. The display will be a solid bargraphbut will have its
zero point in the middle of the display. If the seven segment display value is
positive the bargraph will rise. If the seven segment display value is negative then
the bargraph will fall. When scaling the display use the bAr_ and bAr~ functions
e.g.bAr_ =0 and bAr~ =100 will give a bargraph with all the bottom half
segments lit at a 7 segment display reading of -100 and all the top segments lit
with a 7 segment display reading of 100.
drnd Displayrounding -displaysandsetsthe displayrounding value.Thisvaluemay besetto 0
- 5000 displayed units. Display rounding is useful for reducing the instrument resolution
without loss of accuracy, in applications where it is undesirable to display to a fine
tolerance. (example if set to 10 the instrument will display in multiples of 10).
dCPt Decimal point selection - displays and sets the decimal point. By pressing the ^or v
pushbuttons the decimal point position may be set. Thedisplay will indicate as follows: 0
(no decimal point), 0.1 (1 decimal place) or 0.02 (2 decimal places).
FLtr Digital filter - displays and sets the digital filter value. Digital filtering is used for reducing
susceptibility to short term interference. The digital filter range is selectable from 0to 8,
where 0= none and 8= most filtering. A typical value for the digital filter would be 3.
Page 11 of 34 PM4TCRMAN-1.7.0

Function Description
CaL Ofst Calibration offset - used to place an offset on the display reading. Enter the positive or
negative value to be used for offset at this function using the ^or vpushbutton. For
example if the value 15 is entered at this function the the temperature reading will be 15
degrees higher than the calibrated value across the whole temperature range e.g a
reading of 0degrees will now be displayed as15 degreesanda previousreading of 100
degrees will now be displayed as 115 degrees. The calibration offset can be used with
any input type. The offset value entered does not affect the calibration procedure (i.e.
during calibration the offset is not added or subtracted from the temperature viewed) but
the offset value will be addedor subtracted from the calibrated values once calibration is
complete.
INPt
tyPE Input type - the input type is selected at this function. The input types available are:
100 - 100ΩRTD (Pt100) temperature sensor
1000 - 1000ΩRTD (Pt1000) temperature sensor
t1 b - type B thermocouple
t2 E - type E thermocouple
t3 J - type J thermocouple
t4 - type K thermocouple (no letter is shown since “K” cannot be produced
on display)
t5 n - type N thermocouple
t6 r - type R thermocouple
t7 S - type S thermocouple
t8 t - type T thermocouple
E20 - ±20mV input
E50 - ±50mV input
E75 - ±75mV input (note this input range will allow approx ±98mV input)
E200 - ±200mV input
4-20 - 4-20mA input
dEG
tYPE Display units
o
Cor
o
F or absolute -displaysandsetsthe display temperature units. Select
`C or `F or AbS (degrees Kelvin).
dG.OP Digital output operating mode - seenonly with digital output option. Refer to the separate
“PM4PanelMeterOptionalOutputAddendum”bookletsuppliedwhenthisoptionisfitted.
Select from bin2 - signed binary output, bin - unsigned binary output, b.SCL - scaled
binary output, bcd - BCD output.
dG.OP Output polarity - seen only with digital output option. Refer to the separate “PM4 Panel
Meter Optional Output Addendum” booklet supplied when this option is fitted.
Select either A Io - active low output or A Hi - active high output.
bcd
Strt BCD - start display position - seen only with digital output option. Refer to the separate “PM4PanelMeterOptionalOutputAddendum”bookletsuppliedwhenthisoptionisfitted.
This function affects BCD mode only and determines the number of digits to skip when
outputting from the display. Select from 0 to number of display digits minus 4. e.g. for a 6
digit display you may select 0 to 2, if 2 is selected then the four left most digits will be
output.
dig_ Scaled digital output low reading - seen only with digital output option. Refer to the
separate “PM4 Panel Meter Optional Output Addendum” booklet supplied when this
option is fitted.
Acceptsanyvalid displayvalue.Determinesthelowscalingpointfortheb.SCL modeand
has no effect on other modes.
Page 12 of 34 PM4TCRMAN-1.7.0

Function Description
dig~ Scaled digital output high reading - seen only with digital output option. Refer to the
separate “PM4 Panel Meter Optional Output Addendum” booklet supplied when this
option is fitted.
Accepts any valid display value. Determines the high scaling point for the b.SCL mode
and has no effect on other modes. For example if diG_ is set to 0and diG~ is set to
65535 (2
16
) then the retransmission will not be scaled i.e. a display of 2will cause a
retransmissionof2.IfdiG~ isnowchangedto32767 (2
15
)thenadisplayof2willcause
a retransmission of 4.
dISP
unit Displayunit- allows selectionof NONE (nounits appear onthedisplay),`C (e.g. 21.0"C display)or`F (e.g.53"F display),"(e.g.23.4"),Ce.g.(59.7C)orF(e.g.125.2F).
REC
ctrI Analog output mode - seen only when analog output optionis fitted. Refer to the separate “PM4PanelMeterOptionalOutputAddendum”bookletsuppliedwhenthisoptionisfitted.
Thisfunction allows selectionof on or OFF for PI control output. If set to OFF the analog
output operates as a retransmission output and uses the functions described in this
chapter. If set to on the analog output operates as a PI control output. When the dual
analog output option is fitted only the first analog output is configurable for PI control.
CAL
deG Temperature calibration - temperature calibration for RTD or thermocouple input - see “Calibration” chapter.
CAL1,
CAL2 etc.mV or 4-20mA live input calibration - calibration method for mV or 4-20mA input - see “Calibration” chapter.
USEr En4 &
USEr EN20 4-20mAscaling-4-20mAscalingmethodwithoutliveinputs -see“Calibration”chapter.
UCAL Uncalibration - used to set the instrument back to the factory calibration values. This
functionisonly usedwhencalibrationproblemsexistandthe calibrationmemoryneeds to
be cleared, other settings are not affected. To uncalibrate press the ^and vbuttons
simultaneously, the display will show CAL CLr to indicate that the uncalibration is
complete.
P.but Pbutton function - applicable only in models with front panel P buttons. The Pbutton
may be set to operate some of the remote input functions, see R.INP below for a
description of these functions. The Pbutton is located at the front of 5 or 6 digit LED
models.If boththeremoteinputand PbuttonfunctionareoperatedsimultaneouslytheP
button will override the remote input. The functions below are as described in the R.INP
function above with the exception of the P.SEt function.
Functions available are: NONE,Hi,Lo, HiLo or A.cIr
Page 13 of 34 PM4TCRMAN-1.7.0

Function Description
R.INP Remoteinputfunction-pins 7and 8attherearoftheinstrumentare theremote inputpins.
When these pins are short circuited, via a pushbutton or keyswitch the instrument will
perform theselectedremote inputfunction. Amessagewillflashtoindicate whichfunction
has been selected when the remote input pins are short circuited. The remote input
functions are as follows:
NONE - no remote function required.
P.HLd - peak hold. The display will show the peak value only whilst the remote
input pins are short circuited.
d.HLd - display hold. The display value will be held whilst the remote input pins
are short circuited.
Hi - peak memory. The peak value stored in memory will be displayed if the
remote input pins are short circuited, if the short circuit is momentary then the
display will return to normal measurement after 20 seconds. If the short circuit is
held for 1 to 2 seconds or the power is removed from the instrument then the
memory will be reset.
Lo - valley memory. The minimum value stored in memory will be displayed.
Otherwise operates in the same manner as the Hi function.
HiLo - toggle between Hi and Lo displays. This function allows the remote
input to be used to toggle between peak and valley memory displays. The first
operation of the remote input will cause the peak memory value to be displayed,
the next operation will give a valley memory display. P Hi or P Lo will flash before
each display to give an indication of display type.
SP.Ac - setpoint access only. This blocks access to any functions except the
alarm setpoint functions unless the remote input pins are short circuited or entry is
made via CAL mode.
No.Ac - no access. This blocks access to all functions unless the remote input
pins are short circuited or entry is made via CAL mode.
CAL.S - calibration select. Two sets of certain setup values can be entered in,
one set with the remote input open circuit and another set with the remote input
short circuit to ground. The remote input can then be used to switch between one
set and the other. This feature provides a simple switch change-over to allow
toggling between displays with different function settings for degree type display
o
C or
o
F (dEG tYPE), decimal point place (dCPt), display rounding (drnd) or
display units (dISP) the calibration scaling can also be switched i.e. different
CAL dEG scale settings can be used. Note: other functions such as the alarm and
retransmission settings cannot be changed between the two selections but will
function for whichever selection is displayed at the time.
dULL - display brightness control. The remote input can be used to change the
display brightness. When this mode is selected the display brightness can be
switched, via the remote input, between the brightness level set at the brgt
function and the brightness level set at the dULL function.
A.cIr - clearlatching alarm. This selection is used as the remote input to clear
latched alarm relays. If an alarm relay has been set to latch at the Ax Ltch
function then either the R.INP or P.but function must be set to A.cIr to clear
the latching function. The remote input or Pbutton must be activated for approx.
3 seconds to clear the alarm. If a latched relay is in alarm condition and latched
and the A.cIr function is used the relay will reset when the display value moves
outside the alarm condition i.e. the relay will not reset immediately if its display is
still showing an alarm condition but will reset automatically when its display value
puts it out or alarm condition. If more than one relay is latched then the A.cIr
function will clear all relays. Latched relays will also be cleared if power is
removed from the display.
Page 14 of 34 PM4TCRMAN-1.7.0

Function Description
ACCS Access mode - the access mode function ACCS has fourpossible settings namely OFF,
EASY, NONE and ALL. If set to OFF the mode function has no effect on alarm relay
operation.IfsettoEASY theeasyalarm accessmodewillbeactivated,seedetails prior to
the AxLo functiondescribed earlier in this chapter. If set to NONE there will be noaccess
to any functions via FUNC mode, entry via CAL mode must be made to gain access to
alarm and calibration functions. If set to ALL then access to all functions, including
calibration functions, can be gained via FUNC mode.
SPAC Setpoint access - seen only if more than 1 relay fitted.
Sets the access to the alarm relay set points. The following choices are available:
A1 - Allows setpoint access to alarm 1 only.
A1-2 - Allows access to alarms 1 and 2 only.
A1-3 allowsaccesstoalarms1,2and3etc.uptothemaximumnumberofrelaysfitted.
Theremoteinputfunction(R.INP)mustbesettoSP.AC forthisfunctiontooperate.Note:
Onlythe setpoints which havebeen given a value will be accessible e.g. if A1Hi is set to
OFF then there will be no access to the A1Hi function when SPAC is used.
A1, A2 etc Alarm relay operation mode for relays 1, 2 etc. - the following choices are available for
alarm operation mode:
LiuE - live input mode. The alarm relay operation willalways followtheelectrical input at
thattime irrespective of the7segmentdisplayvalue. e.g. assumethe remote input is set
to pHLd and A1Lo is set to 100. The display may be indicating a peak reading of 500
but if the electrical input changes to correspond with anormal display value of 100 or less
thenthe alarm will operate. This will be the normal setting used unless one of the special
modes which follow is required.
P.HLd -peakholdmode.Ifthepeak hold mode is usedandtheremoteinputissettopeak
holdthen once the peak display goes above any alarm high setpoint the alarm relay will
activate and will not de-activate until the peak hold is released and the display value falls
below the setpoint value.
d.HLd - display hold mode. If the display hold mode is used and the remote input isset to
display holdthenthealarmrelaywill be heldin its present state(activatedor de-activated)
until the display hold is released and the display is free to change.
Hi - peak (max.)memorymode.If thepeakmemory modeisused and the remoteinputis
set to peakmemorythenthealarm will beactivated ifthe peak memoryvalue isabovethe
high setpoint value. The alarm will not de-activate until the memory is reset.
Lo - valley (min.) memory mode. If the valley memory mode is used and the remote input
is set to valley memory then the alarm relay will be activated if the valley memoryvalue is
below the low setpoint value.The alarm will not de-activate until the memory is reset.
dISP - display mode. Ifthe display mode is used then the alarms will operate purely on
the display value at the time i.e. if the display is showing above high setpoint orbelow the
lowsetpoint value then the alarm relay will activate. For example if the remote input were
set to peak memory and A1 were set to live display mode then, unless the display is
actually showing the peak memory value (i.e. the remote input has just been activated),
the alarm relay isfreetooperate from thechanging displayvaluei.e.thememorydoesnot
have to be reset to clear an alarm condition.
Page 15 of 34 PM4TCRMAN-1.7.0

Function Description
bAR Bargraph operation mode - applicable only to bargraph displays. The following choices
are available for bargraph operation mode:
LiuE - live input mode. The bargraph will respond to the electrical input only and will not
necessarily follow the 7 segment display value. For example if the remote input is set for
peak hold operation then when the remote input is closed the 7 segment display will only
show the peak value but the bargraph will be free to move up and down to follow the
electricalinput.Thiswillbethenormalsettingusedunlessoneofthespecialmodeswhich
follow is required.
P.HLd - peak hold mode. The bargraph (and 7 segment display) will indicate the peak
value only whilst the peak value function is operated via a contact closure on the remote
input i.e. the bargraph & 7 segment display can rise but not fall whilst the remote input
switch is closed. When the remote input switch is opened the bargraph value will remain
fixedi.e.itwillnotriseorfall,although the7 segmentdisplay valuewill befreetoalter.This
peak bargraph reading can be cleared by closing the remote input switch for another
operation orby removing power from the instrument. Note: In this mode the bargraph will
show a zero reading until the remote input is operated for the first time after switch on.
d.HLd -displayholdmode.Thebargraph(and7segmentdisplay)valuewillbeheldwhilst
the remote input display hold switch is closed. When the switch is opened the bargraph
valuewillremainfixedattheheldvaluealthoughthe7segmentdisplayvaluewillbefreeto
alter. The held bargraph reading can be cleared by closing the remote input switch for
another operation or by removing power from the instrument. Note: In this mode the
bargraph will show a zero reading until the remote input is operated for the first time after
switch on.
Hi - peak(max.) memory mode. With thepeakremote inputswitch open thebargraph will
indicate the peakvalue inmemory i.e. the bargraph canrise butnotfall. The bargraphcan
beresetbyclearingthememory.Thememorymaybeclearedeitherbyclosingtheremote
input switch for approximately 2 seconds or by removing power.
Lo - valley (min.) memory mode. With the valleyremote input switch open the bargraph
will indicate the valley (min.) value in memory i.e. the bargraph can fall but not rise. The
bargraph can be reset by clearing the memory. The memory may be cleared either by
closing the remote input switch for approximately 2 seconds or by removing power.
dISP -displaymode. Thebargraphdisplaywillfollowwhatevervalueisonthe7segment
display. For example if the remote input set to display hold then the bargraph will also be
held whilst the 7 segment display value is held.
REC , REC2
andd.GOP
REC, REC 2 (Analog retransmission operation mode) and d.GOP (digital output
retransmission). Refer to the separate “PM4 Panel Meter Optional Output Addendum”
bookletsuppliedwhenthisoptionisfitted.Thefollowingcommandsonlyapplyiftheoption
is fitted to the instrument. REC2 is seen only when dual analog output is fitted. The
following choices are available for analog or digital retransmission operation mode:
LiuE - live input mode. The retransmission will follow the electrical input and will not
necessarily follow the 7 segment or bargraph display. For example if the remote input is
setfor peakholdoperationthen whentheremoteinputisclosed the7segmentdisplaywill
only show the peak value but the retransmission will be free to change to follow the
electricalinput.Thiswillbethenormalsettingusedunlessoneofthespecialmodeswhich
follow is required.
P.HLd - peakhold mode. The 7 segment display and retransmission value will indicate
the peak value only whilst thepeak value function isoperated via a contact closure on the
remote input i.e. the 7 segment display and retransmission can rise but not fall whilst the
remote input switchis closed.When the remoteinputswitch is opened the retransmission
value will remainfixedi.e.itwillnot riseor fall,althoughthe7 segmentdisplayvalue willbe
free to alter. This peak retransmission output can be cleared by closing the remote input
switchforanother operation orby removingpowerfromtheinstrument.Note:Inthismode
the retransmission will showa zero reading until the remote input is operated for the first
time after switch on.
Hi - peak (max.) memory mode. With the peak remote input switch open the
retransmission will indicate the peak value in memoryi.e. the retransmission output can
rise but not fall. The retransmission output can be reset by clearing the memory. The
memory may be cleared either by closing the remote input switch for approximately 2
seconds or by removing power to the instrument.
Page 16 of 34 PM4TCRMAN-1.7.0

Function Description
REC and
d.GOP
continued
Lo - valley (min.) memory mode. With the valley remote input switch open the
retransmission will indicate the valley (min.) value in memory i.e. the retransmission
output can fall but not rise. The retransmission output can be reset by clearing the
memory. The memory may be cleared either by closing the remote input switch for
approximately 2 seconds or by removing power to the instrument.
dISP - display mode. The retransmission output will follow whatever value is on the 7
segment display at the time.
bAud Setbaudrate-Selectfrom300, 600, 1200, 2400, 4800, 9600, 19.2 or38.4. Refer
totheseparate“PM4PanelMeterOptionalOutputAddendum”bookletsuppliedwhenthis
option is fitted.
Prty Set parity - select parity check to either NONE, EUEN or odd
O.Put Set RS232/485 interface mode - Select diSP,Cont, POLL or A.buS
Refer to the separate “PM4 Panel Meter Optional Output Addendum” booklet supplied
when this option is fitted. Allows user to select the RS232/485 interface operation as
follows:-
disP Sends image data from the display without conversion to ASCII.
Cont Sends ASCII form of display data every time display is updated.
POLL Controlled by computer or PLC as host. Host sends ASCII command via
RS232/485 and instrument responds as required.
A.buS is used when communicating with the optional Windows compatible download
software.
M.buS - Modbus RTU functions 1 & 3
Addr Set unit address (0 to 31) for polled (POLLor M.bus) mode - allows several units to
operate on the same RS485 interface reportingon different areasetc.The hostcomputer
or PLC maypoll each unitin turnsupplyingtheappropriateaddress. Refer totheseparate
“PM4PanelMeterOptionalOutputAddendum”bookletsuppliedwhenthisoptionisfitted.
Theunitaddressrangesfrom0 to31 (DEC) butis offset by 32 (DEC) toavoidclashing with
ASCII special function characters (such as <STX> and<CR>). Therefore 32 (DEC) or 20
(HEX) isaddress 0, 42 (DEC) or 2A (HEX) addresses unit 10. Note: Address 0 cannot be
used with Modbus protocol.
Returning to normal measure mode
When the calibration has been completed it is advisable to return the instrument to the normal
mode (where calibration functions cannot be tampered with).To return to normal mode, turn off
power to the instrument, wait a few seconds and then restore power.
Page 17 of 34 PM4TCRMAN-1.7.0

4 .1 Error Messages
"----" - This display indicates that the input signal is higher than expected for the selected input
range or for RTD inputs that the input is open circuit e.g. broken sensor wire. The "----" display
will cause any relay with a high setpoint vale set to activate.
"OPEN" - This display indicates an open circuit thermocouple input. The "OPEN" display will cause
any relay with a high setpoint value set to activate.
"-or-" - This display indicates an overrange reading. This means that the instrument is not
being able to display the number because it is too largee.g. above 99999 on a 5 digit display.
Check that the calibration scaling figures are correct.
CAL SPAN Err - this display indicates a calibration span error caused by the input signal being
too low the case of thermocouple inputs or too close to another calibration point input in the case
of mV inputs. Check that the input is correct and that the correct sensor type has been chosen at
the INPt tYPE function. If correct perform a UCAL function operation to reset the calibration
memory then try calibration scaling again.
CAL OFSt Err - this display indicates a calibration offset error caused by the input being too far
away from the theoretical value for the input. For example the PM4 instrument expects the
resistance of a 100ΩRTD input to be 138.5Ωat 100 degrees. If during calibration the user places
an input which is more than 20% away from 138.5Ωand tries to scale the meter to read 100
degrees the offset error message will be seen and the instrument will not accept the scaling.
CoId orINPt - these are not error messages but indicate that the ^or vbutton has been used
to view the thermocouple cold junction temperature or the mV input level. To revert to temperature
measurement, press the ^or vagain.
bd1 or bd2 - may be seen temporarily if the input type is changed. e.g. If display was showing
thermocouple cold junction and then the input was changed to type which does not have a cold
junctin the message may be seen. This message will be removed permanently for the new input
type if the display is toggled using the ^or vbutton.
Temperature reading consistenty high or low - check calibration and also check the CAL OFSt
function to ensure that any offset value is taken into account.
Page 18 of 34 PM4TCRMAN-1.7.0

5 Function Table for fully optioned instrument
Initial display Meaning of display Next display Default setting Record your
settings
C.Set Analog PI control setpoint Value in memory 0
Ax.SP Relay PI control setpoint Value in memory 0See following
table
AxLo Alarm x low setpoint
value Setpoint value or OFF OFF See following
table
AxHi Alarm x high setpoint
value Setpoint value or OFF 1000 See following
table
AxHy Alarm x hysteresis Hysteresis value
in measured units 10 See following
table
Axtt Alarm x trip time No of seconds/tenths
before relay x trips 0.0 See following
table
Axrt Alarm x reset time No of seconds/tenths
before relay x resets 0.0 See following
table
Axn.o or Axn.c Alarm x action N/O or
N/C Axn.o or Axn.c Axn.o See following
table
AxLtch Latching alarm relay
operation on or OFF See following
table
Ax.SP or Ax.t1 Alarm x independent or
trailing setpoint 1,2 etc. Ax.SP or Ax.t1 Ax.SP
brgt Digital display brightness 1to 15
(15 = highest brightness) 15
dULL Remote brightness
control 0to 15 (15 = highest brightness) 1
rEC_ Analog output low limit Value in memory 0
rEC~ Analog output high limit Value in memory 100
rEC_ ch2 Second analog output low
limit Value in memory 0
rEC~ ch2 Second analog output
high limit Value in memory 100
Functions below are accessible via CAL mode only
AxOPER Alarm x operation mode Ax.AL, Ax.tP or Ax.Fr Ax.AL See following
table
bAr_ Bargraph low reading Value in memory 0
bAr~ Bargraph high reading Value in memory 1000
bAr tYPE Bargraph operation mode bAr, S.dot, d.dot or
C.bAr bAr
DGOP Digital output mode bcd, b.SCL, bin or bin2 bin2
dG.OP Digital retransmission
output polarity A Lo or A Hi A Lo
bcd Strt BCD retransmission start
value Value in memory 0
dIG_ Scaled digital output
low reading Value in memory 0
dIG~ Scaled digital output high
reading Value in memory 1000
Page 19 of 34 PM4TCRMAN-1.7.0

P
I
C
o
n
t
r
o
l
ctrI
SPAN Span for relay PI control Value in memory 100 See following
table
Ax.PG Proportional gain for
relay PI control -19.999 to 32.767 1.000 See following
table
Ax.IG Integral gain for relay PI
control -19.999 to 32.767 0.000 See following
table
Ax.IL Low integral limit for
relay PI control 0.0 to 100.0 100.0 See following
table
Ax.IH High integral limit for
relay PI control 0.0 to 100.0 100.0 See following
table
Ax.bS Bias for relay PI control 0.0 to 100.0 50.0 See following
table
Ax.dc Duty cycle for relay PI
control 0to 250 10 See following
table
Ax.dr Duration for relay PI control
(frequency mode only) 0.0 to 25.0 1.0 See following
table
drnd Display rounding
selects resolution Value in memory 1
dCPt Display decimal point Decimal Pt position
(e.g.0.1 or0.02)0
FLtr Digital filter range 0 to 8 0to 8 (8 = most filtering) 2
CAL OFSt Calibration Offset -1999 to 9999 0
P
I
C
o
n
t
r
o
l
REC
ctrI Analog PI control on or off on or OFF OFF
C.SPN Analog PI control span Value in memory 100
C. PG Analog PI control
proportional gain -19.999 to32.767 1.000
C. PO Analog PI control
proportional offset 0 to100 0.0
C. IG Analog PI control integral
gain -19.999 to32.767 0.000
CIL.H Analog PI control integral
limit high 0 to100 100.0
CIL.L Analog PI control integral
limit low 0 to100 100.0
REC
SPAC Analog PI control setpoint access on or off on or OFF OFF
INPt tYPE Temperature sensor/input
type
100, 1000, t1 b, t2 E,
t3J, t4, t5 n, t6 r, t7 S,
t8 t, E 20, E 50, E 75,
E200 or4-20
100
dEG tYPE Degrees C or F
measurement “C , “F or AbS “C
dISP unit Units to appear on
display NONE, “C, "F, “, C or F NONE
CAL dEG Temperature calibration See calibration chapter n/a
Lin Pts Lineariser points for mV
or 4-20mA input 2, 3, 4 or 5 2
CAL1, CAL2
etc.mV input calibration points See calibration chapter n/a
USER en4 4mA scaling point without
live input See calibration chapter 0
USER En20 20mA scaling point
without live input See calibration chapter 1000
UCAL Uncalibrate CAL CLr n/a
Page 20 of 34 PM4TCRMAN-1.7.0