AMALGAMATED INSTRUMENT PM4-BC Guide

Model PM4-BC
Binary/BCD/Gray Code
Panel Mount Display/Controller
Operation and Instruction Manual
AMALGAMATED INSTRUMENT CO ABN: 80 619 963 692
Unit 5, 28 Leighton Place Hornsby Telephone: [phone] e-mail: [email protected]
NSW 2077 Australia Facsimile: [phone] Internet: www.aicpl.com.au

Table of Contents
1 Introduction 3
2 Mechanical Installation 4
3 Electrical installation 5
4 Function tables - summary of setup functions 16
5 Explanation of functions 19
6 Scaled inputs 35
7 Weighted input operation 37
8 Specifications 39
9 Guarantee and service 40
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1 Introduction
1.1 General description
This manual contains information for the installation and operation of the PM4-BC Monitor. The
PM4 is a general purpose instrument which may be configured to accept inputs of:
Binary (SEt INPt function 5.27 set to bin)
BCD (SEt INPt function 5.27 set to bcd)
Gray code (SEt INPt function 5.27 set to GRAY)
Weighted binary (SEt INPt function 5.27 set to d.inP)
Scaled binary, BCD or Gray code (see USER SCLE function 5.36)
The inputs may be presented in parallel, strobed or addressed form. Twenty input lines plus two
GND lines are available. For BCD inputs, addressed, strobed or up to 4 digit parallel four of these
input lines can be allocated for use as remote decimal point or display hold.
Optional relays, serial communications, analog or digital retransmission may also be provided.
The PM4 series of Panel Mount Monitors are designed for high reliability in industrial applications.
The high brightness LED display provides good visibility even in areas with high ambient light
levels. The high contrast LCD displays provide good visibility and are ideal for battery powered
applications.
Full electrical isolation between power supply, input signals and retransmission output is 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. Note
that the input signals themselves share a common ground.
Unless otherwise specified at the time of order, your PM4 has been factory set to a standard
configuration. The PM4 series instruments can be configuration and calibrated easily by the user.
Initial changes may require dismantling the instrument to alter PCB links, other changes are made
by push button functions.
1.2 Output options
•1, 3 or 6 optional relays rated 240VAC 5A (resistive load)
•Isolated analog retransmission configurable for 4–20mA, 0–1V or 0–10V
•Isolated RS485 or RS232 serial communications (ASCII or Modbus RTU)
•Isolated Digital output - binary or BCD up to 16 bit, NPN or PNP output types available
•Optional outputs are available in certain combinations only e.g. Extra relay plus RS232
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2 Mechanical Installation
Choose a mounting position as far away as possible from sources of electrical noise such as motors,
generators, fluorescent lights, high voltage cables/bus bars etc. An IP65 or IP67 access cover which
may be installed on the panel and surrounds is available as an option to be used when mounting the
instrument in damp/dusty positions. A wall mount case is available, as an option, for situations
in which panel mounting is either not available or not appropriate. A portable carry case is also
available, as an option, for panel mount instruments.
Prepare a panel cut out of 45mm x 92mm +1 mm / – 0 mm (see diagram below). Insert the
instrument into the cut out from the front of the panel. From the rear of the instrument fit the
two mounting brackets 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: use the elastic band provided to hold the mounting bracket in place whilst
tightening securing screws.
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)
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3 Electrical installation
3.1 Electrical installation
The PM4 Panel Meter is designed for continuous operation and no power switch is fitted to the
unit. It is recommended that an external switch and fuse be provided to allow the unit to be
removed for servicing.
The plug in, screw type, terminal blocks allow for power supply wires of up to 2.5mm2to be
fitted. Connect the wires to the appropriate terminals as indicated below. A 22 terminal plug
in data connector is provided which will accept up to 1mm2wires. To insert wires to this data
connector insert a screwdriver blade (max 2.5mm wide) into the square socket adjacent to the
terminal required, push the wire into the terminal and remove the screwdriver blade. The wire will
lock in place. See the “Weighted digital input operation and electrical connections” chapter page
37 for weighted digital input connections.
For connection details of optional outputs refer to the separate ”PM4 Panel Meter Optional Output
Addendum” booklet supplied when options are fitted.
3.2 Instrument rear panel
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Instrument label (example)
3.3 Resistor pack and link locations
3.4 Electrical connection examples
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3.5 Parallel BCD input
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3.6 Strobed BCD input
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3.7 Addressed BCD input
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3.8 Parallel binary input (also used for Gray code)
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3.9 Strobed binary input (also used for Gray code)
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3.10 Addressed binary input (also used for Gray code)
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3.11 Remote decimal point selection and display hold
For up to 4 digit parallel BCD or addressed BCD or strobed BCD inputs terminals 18, 19 and 20
may be used to select the decimal point position. To allow these inputs to be used in this manner
the dP INPt function must be set to on. When the dP INPt function is set to on the software
decimal point selection set at the dCPt function will be ignored. The table below shows the input
requirements for remote decimal point selection.
The display hold input will hold the current display value when activated. The INPt HOLd
function must be set to on to enable the display hold input. The HOLd POL function may be set
to Hi or Lo, this sets the input logic level at terminal 21 for display hold. The display hold input
is available for use with up to 4 digit parallel BCD or addressed BCD or strobed BCD.
Decimal point positions 8 digit display example.
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3.12 Weighted digital input
See chapter 7for description of this input type.
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3.13 Input Output Configuration
If you need to alter the input or output configuration link settings proceed as follows:
Remove earth screw
which passes through the
case then slide out
the printed circuit board
1. Remove the plug in terminals
from the rear of the instrument
2. Remove the 4 x self tapping screws from
the back cover then remove the back cover
by pulling it away from the instrument
3. Remove the earth screw which passes
through the underside of the case then
slide out the board or boards
4. Configure the PCB links as requred, see appropriate chapter
5. Slide PCB back into case
6. Replace the earth screw which passes through the case
7. Refit the back cover and fix with the self tapping screws
8. Plug the terminal strips back into the rear of the instrument
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4 Function tables - summary of setup functions
Note: the order in which the functions appear on the display may not be exactly as shown below.
The availability and order of functions is determined by choice of function settings and options
fitted.
Functions in this first table are available in FUNC or CAL mode
Display Function Range Default Your
record
Ref/Page
AxLo Low setpoint value for the
designated alarm relay x
(∗Optional)
Any display
value or OFF
OFF See
4.1
5.1 /21
AxHi High setpoint value for
designated alarm relay x
(∗Optional)
Any display
value or OFF
OFF See
4.1
5.2 /21
AxHY Hysteresis value for the
designated alarm relay x.
(∗Optional)
0to 9999 10 See
4.1
5.3 /22
Axtt Trip time delay for the
designated alarm relay x.
(∗Optional)
0to 9999 0 See
4.1
5.4 /23
Axrt Reset time delay for the
designated alarm relay x.
(∗Optional)
0to 9999 0 See
4.1
5.5 /23
Axn.o
or
Axn.c
Alarm relay xaction to
normally open (de-energised) or
normally closed (energised)
(∗Optional)
Axn.o or
Axn.c
Axn.o See
4.1
5.6 /23
A3.SP
or
A3.t2
etc.
Relay operation independent
setpoint or trailing setpoint
(∗Optional)
A3.SP,
A3.t2,
A4.SP,
A4.t2 or
A4.t3
A3.SP See
4.1
5.7 /24
brGt Display brightness level 1to 15 15 5.8 /24
bAr_ Bargraph low value (seen only
on bargraph display
instruments)
Any display
value
05.9 /24
bAr~ Bargraph high value (seen only
on bargraph display
instruments)
Any display
value
1000 5.10 /25
REC_ Analog output option low
display value (∗Optional)
Any display
value
05.11 /25
REC~ Analog output option high
display value (∗Optional)
Any display
value
1000 5.12 /25
(∗Optional)—this function will only be accessible if the relevant option is fitted
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Functions in this second table are available only in CAL mode or if ACCS is set to ALL
Display Function Range Default Your
record
Ref/Page
bAr
tYPE
Bargraph type for instruments
with bargraph display (seen
only on bargraph display
instruments)
bAr,S.dot,
d.dot,
C.bAR or
r.dot
bAr 5.13 /26
dGOP Digital output option mode
(∗Optional)
bcd,b.SCL,
bin or bin2
bin2 5.14 /27
dG.OP Digital output option polarity
(∗Optional)
AIo or AHi AIo 5.15 /27
bcd
Strt
Digital output option BCD start
position (∗Optional)
0,1or 2 0 5.16 /27
diG_ Digital output option low value
(∗Optional)
Any display
value
05.17 /27
diG~ Digital output option high value
(∗Optional)
Any display
value
1000 5.18 /28
dCPt Decimal point 0,0.1 etc. 05.19 /28
Pbut Pbutton function (for
instruments with front P
button)
NONE, Hi, Lo
or HiLo
NONE 5.20 /28
ACCS Access mode OFF, EASY,
NONE or ALL
OFF 5.21 /29
INPt
bitS
Number of input bits 1to 20 or 1
to 31
14 5.22 /29
SIGN Sign bit on or off on or OFF OFF 5.23 /29
dISP
RAtE
Display rate 1,2,4,8,16
or 32
45.24 /30
d.inP Number of weighted digital
input
1to 8 4 5.25 /30
di1,
di2
etc.
Weighted digital input Any display
value
05.26 /30
SEt
INPt
Set input type bin,bcd,
GRAY or
d.inP
bin 5.27 /30
INPt Set input mode PARL,Strb
or Addr
PARL 5.28 /30
dAtA
POL
Data polarity Hi or Lo Hi 5.29 /31
Strb
POL
Strobe polarity Hi or Lo Hi 5.30 /31
bcd
COdE
BCD code 0to 5 0 5.31 /31
(∗Optional)—this function will only be accessible if the relevant option is fitted
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bcd
dIGt
Number of BCD digits to be
displayed
1to number of
display digits
on the
instrument
45.32 /31
dP
INPt
Remote decimal point on or off on or OFF OFF 5.33 /32
INPt
HOLd
Remote display hold on or off on or OFF OFF 5.34 /32
HOLd
POL
Remote display hold polarity Hi or Lo Lo 5.35 /32
USER
SCLE
User scale n/a n/a 5.36 /32
CAL1 First scaling point n/a n/a 5.37 /33
CAL2 Second scaling point n/a n/a 5.38 /33
CAL
OFSt
Scaling offset n/a n/a 5.39 /33
bAUd
RAtE
Baud rate for serial
communications (∗Optional)
300, 600,
1200, 2400,
4800, 9600,
19.2 or 38.4
9600 5.40 /33
PrtY Parity for serial communications
(∗Optional)
NONE, EUEN
or odd
NONE 5.41 /33
O.Put Output for serial
communications (∗Optional)
dISP, Cont,
POLL,A.buS
or M.buS
Cont 5.42 /34
Addr Instrument address for serial
communications (∗Optional)
0to 31 0 5.43 /34
(∗Optional)—this function will only be accessible if the relevant option is fitted
4.1 Relay table
Record your relay settings in the table below. Note there is no relay 1 in this instrument.
Display Relay 2 Relay 3 Relay 4 Relay 5 Relay 6 Relay 7
AxLo
AxHi
AxHY
Axtt
Axrt
Axn.o or Axn.c
AxSP or Axt1 etc. n/a
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5 Explanation of functions
The PM4 setup and calibration functions are configured through a push button sequence. The
three push buttons located at the rear of the instrument (also at the front on some display options)
are used to alter settings. Two basic access modes are available:
FUNC mode (simple push button sequence) allows access to commonly set up functions such as
alarm setpoints.
CAL mode (power up sequence plus push button sequence) allows access to all functions including
calibration parameters.
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 push button (in some cases both simultaneously) when the required function is
reached. See the flow chart example on the following page.
P F
P F P F
P F
P F
Entering ModeCAL Entering ModeFUNC
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 in this mode state until
power is removed. i.e. there is no need to repeat step 1
when accessing function unless power has been removed.
CAL
No special power up procedure
is required to enter mode.FUNC
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Example: Entering FUNC mode to change alarm 1 high function A1Hi from OFF to 100
F U N C
F U N C End
A1Hi OFF
100
Press & release
Press & release Press & release
Press & release
Press & release F
^until
FP For until
Funtil
then press ^v
Example: Entering CAL mode to change decimal point function dCPt from 0to 0.02
F U N C
F U N C End
dCPt
CAL
0
.0 0 2
Press & release
Press & release Press & release
Press & release
Press & hold Release
Hold
Press & release F
^until
FP For until
Funtil
FF
Funtil
then press ^v
Switch off
instrument
Switch on
instrument
Easy alarm relay adjustment access facility
The display has an easy alarm access facility which allows access to the alarm setpoints simply by
pressing the Fbutton at the front or rear of the instrument. The first setpoint will then appear
and changes to this setpoint may be made to this setpoint via the ^or vbuttons. Press the
Fbutton to accept any changes or to move on to the next setpoint. Note: this easy access also
functions in the same manner for the PI control setpoint (relay and/or analog PI output) if PI
control is available. The instrument must be set in the manner described below to allow the easy
access facility to work:
1. The R.INP function must be set to SPAC or the ACCS function must be set to EASY.
2. At least one alarm must have a setpoint, nothing will happen if all the alarm setpoints are
set to OFF.
3. The SPAC function must be set to allow access to the relays required e.g. if set to A1-2
then the easy access will work only with alarm relays 1 and 2 even if more relays are fitted.
4. The instrument must be in normal measure mode i.e. if the instrument is powered up so that
it is in CAL mode then the easy access will not function. If in doubt remove power 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 is to power up via CAL mode i.e. there is no entry to FUNC mode functions unless
the instrument is powered up in CAL mode.
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