AMALGAMATED INSTRUMENT PM4-IV2 Guide

Model PM4-IV2
Panel Mount Dual Bar Graph Display
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 5
3 Electrical installation 6
4 Bargraph scaling 12
5 Warning display 13
6 Alarm relay and brightness level settings 15
7 Specifications 17
8 Guarantee and service 18
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1 Introduction
1.1 General description
This manual contains information for the installation and operation of the PM4-IV2 panel mount
monitor. The PM4-IV2 is a dual bargraph with dual isolated input panel meter display. This
instrument may be configured to accept an input signal of 4 to 20mA, 0 to 2VDC or 0 to 20VDC.
Full electrical isolation between each input and power supply is provided by the PM4.
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 scaled easily by the user.
Changes to input type requires dismantling the instrument to alter PCB links.
Scaling of each bargraph display is accomplished by applying live inputs and using the rear push-
buttons. The bargraph can be changed from solid bar type display to single segment display using
DIP switch 1 at the rear of the instrument.
Relay outputs are optionally available for this instrument. A single relay option or 3 relay option
or 6 relay option board may be fitted. The relay option allows either a high or low setpoint to be
chosen for each relay. Each relay can be assigned to operate either from Channel 1 or from Channel
2.
The front panel Pis not assigned any use in this software version.
%%
50 50
50 50
00
00
100 100
100 100
70 70
70 70
20 20
20 20
80 80
80 80
30 30
30 30
90 90
90 90
40 40
40 40
60 60
60 60
10 10
10 10
P P
Solid bar
display.
DIP switch 1
OFF
Single segment
display.
DIP switch 1 ON
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1.2 Acessing setup for scaling, relays and display brightess
Use the method below to access the display scaling, relay high and low setpoints and brightness
level setup. Note that DIP switch 4 must be in the ON position to access the scaling functions and
in the OFF position to access the alarm relay and brightness functions.
If DIP switch 4 is set to ON then Channel 2 bargraph should blank refer to chapter 4for further
details.
If DIP switch 4 is set to OFF then one bargraph or both bargraphs should flash indicating a relay
number see chapter 6for further details.
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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 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
96mm
9mm
91mm
111mm
10mm
Mounting bracket
(2 off)
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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. Power supply type is factory configured, check the power supply type fitted
before connecting power to the PM4.
The plug in, screw type, terminal blocks allow for wires of up to 2.5mm2to be fitted for power
supply connections and optional relays and 1.5mm2for signal inputs. Connect the wires to the
appropriate terminals as indicated below. Refer to connection details provided in this chapter to
confirm proper selection of voltage, polarity and input type before applying power to the instrument.
When 4-20mA input is selected the input is protected by a 30mA rated polyfuse, this fuse is self
healing but can be permanently damaged by high voltage inputs.
The use of screened cable is recommended for signal inputs.
Rear connections and typical connection label
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3.2 Electrical connection examples
2 wire 4-20mA externally powered sensor connected to channel 1
2 WIRE
4-20mA
SENSOR
External Power
Supply
+
+
-
-
4-20mA
123456789
Mains/case earth
AC active
AC neutral (DC+)
(DC-)
3 wire 4-20mA externally powered sensor connected to channel 1
4 WIRE
4-20mA
SENSOR
External Power
Supply
+
+
-
-
4-20mA
123456789
Mains/case earth
AC active
AC neutral (DC+)
(DC-)
4 wire 4-20mA externally powered sensor connected to channel 1
4 WIRE
4-20mA
SENSOR
External Power
Supply
+
+
-
-
4-20mA
123456789
Mains/case earth
AC active
AC neutral (DC+)
(DC-)
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DC voltage input connected to channel 1
DC Output
device/
sensor
+
-
123456789
Mains/case earth
AC active
AC neutral (DC+)
(DC-)
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Optional 6 relay board connections
Optional 3 relay board connections
Optional 1 relay board connections
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3.3 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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3.4 Input range link selection
Dismantle the instrument as described in section 3.3. Insert the links into the appropriate location
on the pin header to suit the range required.
LK8
CH2
LK8
CH2
LK8
CH2
LK4
CH1
LK4
CH1
LK4
CH1
20V
20V
20V
2V
2V
2V
4-20
mA
4-20
mA
4-20
mA
Example Channel 1 and Channel 2
set for 4-20mA input
Example Channel 1 set for 4-20mA
input and Channel 2 set for 0-20V input
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4 Bargraph scaling
The rear pushbuttons are use to scale the bargraph. Refer to section 1.2 for details of how to
access the setup functions for relay and brightness adjustment. The procedure in section 1.2 must
be followed before proceeding to the steps below.
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5 Warning display
If during scaling both bargraphs flash on and off for 2 to 3 seconds this indicates a span error
during scaling i.e. the input for the low bargraph level is the same or too close to the input for the
high bargraph level. Check the inputs at low and high levels and rescale the display. There should
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be at least 20% off full scale (full scale being the range set by the input links) difference between
the input at low and high levels.
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6 Alarm relay and brightness level settings
The rear pushbuttons are used to set the alarm relays and display brightness levels. The rear DIP
switch 4 must be in the OFF position to allow the alarm relays and brightness levels to be set.
6.1 Alarm relays
A high alarm or a low alarm setting can be stored for each relay. The number of times the bargraph
flashes during setup indicates the relay being set. The bargraph illuminated indicates which input
will activate the relay e.g. 3 fast flashes followed by a blank on Channel 2 bargraph indicates relay 3
will operate from Channel 2 if this position is stored. When the required setting has been achieved
press the Fbutton to store in memory.
If a low alarm is set the relay will close when the display reaches or falls below the level set and will
open when the display rises above the level set. If a high alarm is set the relay will close when the
display reaches or is above the the level set and will open when the display falls below the level set.
Note: the 3 relay option is fitted with changeover relays which allows a choice of normally open
and normally closed connections. The single relay and 6 relay options are normally open operation.
All relays are voltage free. A hysteresis or ”deadband” of one half of a display segment exists to
avoid relay chatter around the setpoint. e.g. if a relay has a low alarm of 50% then the relay will
activate at 50% or below but will not reset until the input is half a segment above 50%.
Refer to section 1.2 for details of how to access the setup functions for relay and brightness adjust-
ment. The procedure in section 1.2 must be followed before proceeding to the steps below.
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6.2 Brightness level settings
The display brightness can be set using the rear pushbuttons. If required 2 levels can be set and
switched via an external switch.
Setting the brightness level
Refer to section 1.2 for details of how to access the setup functions for relay and brightness adjust-
ment.
If brightness level switching is required e.g. for day/night viewing levels then fit a switch across
terminals 8 and 9 at the rear of the display. Set the brightness level as previously described when
the switch is open then close the switch and repeat the process. i.e. the brightness is set once with
the switch open and again with the switch closed. In normal operation when this switch is now
operated the display will switch between the two levels chosen.
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7 Specifications
7.1 Technical specifications
Input type: Link selectable 4 to 20mA or
0-2VDC or 0-20VDC (Note: not ±2VDC or ±20VDC)
Impedance: Typically 65Ω for 4-20 mA input (10Ω plus polyfuse resistance)
1MΩ on DC voltage input
Sample Rate: 4 samples per second for each input
Ambient temp: -10 to 60oC
Humidity: 5 to 95% non condensing
Display: Dual 32 segment bargraphs with red LED segments
Power Supply: AC 240V, 110V or 24V 50/60Hz
or DC isolated wide range 12 to 48V.
Special supply types 32VAC, 48VAC 50/60Hz or
DC isolated 50 to 110V also available.
Note: supply type is factory configured.
Isolation: Rated at 1kV for 30 seconds, input to input and
input to power supply
Power Consumption: AC supply 4 VA max, DC supply typically 180mA at 12VDC
and 90mA at 24VDC
Add 10mA at 24V or 20mA at 12V per option relay fitted
7.2 Options
Single relay: Form A rated 5A at 240VAC into resistive load
Three relays: Form C rated 5A at 240VAC into resistive load
Six relays: Form A rated 5A at 240VAC into resistive load
7.3 Physical Characteristics
Bezel Size: DIN 48mm x 96mm x 10mm
Case Size: 44mm x 91mm x 120mm behind face of panel
Panel Cut Out: 45mm x 92mm +1mm/-0mm
Connections: Plug in screw terminals
(max. 2.5mm2for power and 1.5mm2wire for signal)
Weight: 400 gms
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8 Guarantee and service
The product supplied with this manual is guaranteed against faulty workmanship for a period of
two years from the date of dispatch.
Our obligation assumed under this guarantee is limited to the replacement of parts which, by
our examination, are proved to be defective and have not been misused, carelessly handled, de-
faced or damaged due to incorrect installation. This guarantee is VOID where the unit has been
opened, tampered with or if repairs have been made or attempted by anyone except an authorised
representative of the manufacturing company.
Products for attention under guarantee (unless otherwise agreed) must be returned to the manu-
facturer freight paid and, if accepted for free repair, will be returned to the customers address in
Australia free of charge.
When returning the product for service or repair a full description of the fault and the mode of
operation used when the product failed must be given. In any event the manufacturer has no other
obligation or liability beyond replacement or repair of this product.
Modifications may be made to any existing or future models of the unit as it may deem necessary
without incurring any obligation to incorporate such modifications in units previously sold or to
which this guarantee may relate.
This document is the property of the instrument manufacturer and may not be
reproduced in whole or part without the written consent of the manufacturer.
This product is designed and manufactured in Australia.
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