Aplisens PMS-970 User manual

USER’S MANUAL
PMS-970
Programmable Meter
Firmware: from v.5.00
EN.IO.PMS-970
OCTOBER 2019
APLISENS S.A., 03-192 Warsaw, ul. Morelowa 7
tel. [phone]; fax [phone]
www.aplisens.pl, e-mail: [email protected]
Revision 01.A.002

Symbols used
Symbol
Description
Carefully follow the information in this document to ensure safety and full
functionality of the device.
Information particularly useful for the installation and use of the device.
Information particularly useful for the installation and use of the Ex type device
Information on the disposal of used equipment.
BASIC REQUIREMENTS AND SAFETY OF USE
The manufacturer takes no liability for damage resulting from incorrect
installation of the device, neglecting to keep the device in proper technical
condition, and using the device for purposes other than intended.
Installation should be conducted by qualified personnel, authorized for
installation of electrical equipment and measuring devices. The installer is
responsible to conduct the installation according to this manual as well as laws
and standards of safety and electromagnetic compatibility applicable for this
kind of installation.
In any installation equipped with measuring devices, there is an injury hazard
from compressed agent in case of a leak. Follow all safety requirements during
the installation, use, and inspection of the display.
In case of malfunction, disconnect the device and return it to the producer or an
authorized service unit for repair.
In order to minimize the possibility of malfunction and the resulting hazard to
personnel, avoid installing the device in dangerous environment where there is a
possibility of the following:
mechanical impact, excess shock and vibration.
excess temperature fluctuation.
steam condensation, dusting, icing.
Installation of intrinsically safe devices must be conducted very carefully, following
all standards and laws applicable for installations of this kind.
Changes made to the production may be introduced before the paper version of the user’s manual is
updated. The up-to-date user’s manual is available on the manufacturer's website: www.aplisens.pl.

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TABLE OF CONTENTS
1. INTRODUCTION...........................................................................................................2
2. SAFETY ........................................................................................................................2
3. SET LIST .....................................................................Błąd! Nie zdefiniowano zakładki.
4. TRANSPORT AND STORAGE.....................................................................................3
4.1. Transport..................................................................................................................... 3
4.2. Storage ....................................................................................................................... 3
5. WARRANTY .................................................................................................................3
6. STRUCTURE ...............................................................Błąd! Nie zdefiniowano zakładki.
7. INSTALLATION ............................................................................................................4
8. CONNECTING ..............................................................................................................6
9. TECHNICAL PARAMETERS......................................................................................15
10. OPERATION...............................................................................................................17
10.1. Programming ............................................................................................................ 17
10.2. Set-point programming.............................................................................................. 20
10.3. Alternate output control............................................................................................. 21
10.4. Error codes ............................................................................................................... 21
10.5. Serial communication................................................................................................ 22
10.6. Display test ............................................................................................................... 29
11. REVISION HISTORY ..................................................................................................29
12. INSPECTION .............................................................................................................. 29
12.1. PERIODICAL INSPECTION ..................................................................................... 29
12.2. NON-PERIODICAL INSPECTION ............................................................................ 29
13. SCRAPPING AND DISPOSAL ...................................................................................29

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1. INTRODUCTION
The subject of this instruction manual is the PMS-970 programmable meter.
The manual includes data, hints, and recommended action for installation and usage of the
meter, as well as troubleshooting tips.
2. SAFETY
Read this instruction carefully prior to, installation, startup, or any other work.
Installation and maintenance can only by conducted by qualified personnel,
authorized to install electrical equipments and measuring devices.
Use the meter according to its intended use, without exceeding maximum
acceptable parameters.
Prior to assembly or disassembly of the device, be sure to disconnect the power
source.
It is not acceptable to conduct any repair or otherwise tamper with the electronic
circuit of the device. Damage assessment and possible repair can only be made
by the producer or an authorized unit.
Do not use the device when it is damaged. If malfunction occurs, disconnect the
device.
3. LIST TO CHECK COMPLETENESS OF DELIVERY
Along with the meter, the user receives the following:
a) Product certificate, functioning as a warranty card;
b) Declaration of conformity (on customer's request);
c) Instruction Manual designated „ EN.IO.PMS-970”
Positions b), c) are available from the website www.aplisens.pl

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4. TRANSPORT AND STORAGE
4.1. Transport
When transported, the meters should be packed in individual and/or group packaging and
carried on a covered means of transport. The packaging should be secured against shifting
and atmospheric weather effects.
4.2. Storage
The meter should be stored in the manufacturer's packaging, in a covered room, free of
vapor and corrosive agents, where temperature and relative humidity do not exceed
maximum acceptable limits.
5. WARRANTY
The producer provides warranty under the conditions specified in Product Certificate that
works as a warranty card.
Warranty will be void if the device is not used according to its intended use, the user
does not follow this instruction manual, the device is handled by unqualified
personnel or the meter has been tampered with.
6. CONSTRUCTION
The PMS-970 meter has two measuring inputs –one 0-20mA current input and one 0-10V
voltage input. The current input is equipped with a safety device that protects the measuring
resistor from damage. The input current is limited to 40 mA (typically). When the temperature
of the measuring resistor falls, the safety device will automatically switch off and the system
displays the measurement value again. After the safety device has switched off, the
measurement may be slightly less precise for a while (until the system cools down entirely).
The readout can be freely scaled by the user. Readout rounding and filtering grade can also
be programmed.
Two versions are available: PMS-970T with dual digital/analog display and PMS-970P with
single, big digit display. 26 point, tricolour LED bargraph (PMS970T version) allows easy
judgement of levels and threshold values.
Depending on version, 2 or 4 relay outputs are available. Threshold levels with individual
hysteresis and ON/OFF function are user programmed. The special function called „alternate
output control” allows optimal control of cascaded pumps.
Optionally, the meter can be equipped with an active current output. he range of current
change at the output is programmed separately. The RS-485 communication link and the
transmitter power output are available as standard option. The meter is available in one
universal version of its power system: 20 –250V AC/DC.
The PMS-970 is used for adjustment processes e.g. for temperature (heating / cooling) with
adjustable delay times for engaging output transmitters, level operation or valve operation.

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7. INSTALLATION
The device is designed and made in a way that provides maximum safety of use and
resistance to interference that occur in a typical industrial environment. For these features to
be fully used, the installation of the device should be conducted properly, according to the
relevant standards.
Prior to installation, read the basic safety requirements on page 3.
Prior to connecting the device to the electrical system, check if voltage on
the electrical system corresponds to the nominal voltage value specified
on the device’s label.
The load should meet the requirements specified in Technical Data.
All installation work must be performed with power disconnected..
Consider the necessity of securing the power clamps against
unauthorized access.
The device should be installed indoors, in a housing (panel, switchbox)
providing proper protection against electrical surges. Metal housing must
be grounded according to relevant laws.
Prior to assembly, disconnect power from the electrical system.
Prior to switching on the device, carefully inspect if the connections were
made correctly.
To install the device, prepare a 90,5 x 43 mm opening in the panel (Pic.7.1,
7.2). The thickness of the material that the panel is made of should not be
more than 5mm. While preparing the installation opening, allow for recesses
to accommodate catch pawls on both sides of the housing (Pic.7.1, 7.2).
Place the device in the opening, inserting it from the front side of the panel,
then fix it with holders (Pic. 7.3). Minimum distance between axes of
installation openings –resulting from thermal and mechanical working
conditions –is 115mm (horizontal axis) and 67mm (vertical axis) (Pic. 7.4).
Pic. 7.1 Recommended installation dimensions

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Pic. 7.2 Acceptable installation dimensions
Pic. 7.3 Fixing with holders
Pic. 7.4 Installation of several devices

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8. CONNECTING
Clamp no. 3 is the functional grounding clamp. Grounding the clamp is
necessary for protection against interference. The clamp is also used for
connecting the shields of measuring wires.
All connection and installation steps must be performed with power
disconnected.
Safety precautions
- Installation should be conducted by qualified personnel, authorized to
install electrical devices. All available safety requirements must be
considered during installation. It is the installer’s duty to perform installation
according to this instruction manual as well as laws and standards of safety
and electromagnetic compatibility, relevant to the type of installation
performed.
- The device is not equipped with an external safety cut-out with minimum
possible nominal current value (we recommend a bipolar cut-out for nominal
current no more than 2A) and a power switch in the vicinity of the device.
If a unipolar cut-out is used, it must be mounted on the phase lead (L).
- Select the cross-section of the power cable so that protection of the cable
is provided with a fuse from the device’s side in case of short-circuit on the
cable.
- Cable types must correspond to relevant standards, local laws and
regulations.
- To provide protection against accidental short-circuit, the connecting leads
should be ended with proper insulated cable ends.
- Tighten the clamp bolts. The recommended torque of tightening is 0,5 Nm.
Loose bolts may cause fire or malfunction. Tightening the bolts too much
may lead to damage of connections inside the device and breaking the
thread..
- If the device is equipped with separable clamps, they should be tucked into
proper connectors in the device even if they are not used for any
connections.
- Clamps that are not in use (marked n.c.) must not be used to connect
any connection leads (e.g. as bridges), since it may cause damage to
the device or an electric shock.
- If the device is equipped with housing, shields, and compression glands to
protect from water, pay close attention to tighten or compress them properly.
When in doubt, consider using additional precautions (shields, canopies,
leak stoppers, etc.). Negligent installation may increase the risk of an electric
shock.
- Once installation is complete, do not touch the connections when power is
on due to a possibility of an electric shock.

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Due to possible significant interference occurring in industrial systems, use adequate
precautions that ensure proper operation of the device. Disregarding the following tips
may, in certain circumstances, lead to exceeding the levels of electromagnetic
disturbance for a typical industrial environment, which in turn may cause incorrect
readout on the device.
–Avoid joint (parallel) placement of signal and transmission lines with power lines and lines
for operating inductive loads (e.g. contactors). Such lines should cross at right angle.
–Contactors coils and inductive loads should be equipped with counter-interference systems
such as RC-type.
–It is recommended to use shielded signal lines. Signal line shields should be grounded at
one end of the shielded line only.
–In case of magnetically induced interference, it is recommended to use twinned couples of
signal lines (spirals). The spiral (best shielded spiral) should be used for communication of
RS-485 serial transmission.
–If the measuring or operating circuits are longer than 30m or leave the building, it is
required to install additional safety precautions against overvoltage.
–In case of interference from power supply, it is recommended proper interference
eliminators. The connections between the eliminator and the device should be as short as
possible and the metal housing of the eliminator should be grounded with the largest area
possible. Do not let the leads connected to eliminator output run parallel to interfered lines
(e.g. operating circuits for transmitters or contactors).
Power supply and measurement signals are connected through screw joints located in the
rear part of the device housing.
Pic. 8.1 Insulating the leads and dimensions of cable ends

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Pic. 8.2 Description of terminals for OW standard version (see nameplate)
Pic. 8.3 Description of terminals for standard version

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Pic. 8.4 Description of terminals for version with additional OW passive current output (see
nameplate)
Pic. 8.5 Description of terminals for version with additional passive current output
Pic. 8.6 Connection of 2-lead OW current transmitters

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Pic. 8.7 Connection of 2-lead current transmitters
Pic. 8.8 Connection of 3-lead OW current transmitters
Pic. 8.9 Connection of 3-lead current transmitters

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Pic. 8.10 Connection of OW voltage transmitters
Pic. 8.11 Connection of voltage transmitters
Pic. 8.12 Connection of passive current output

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Pic. 8.13 Connection of power supply and 4 transmitters operating loads
Pic. 8.14 Connection of power supply and 2 transmitters operating loads

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Pic. 8.15 Connection of power supply and 2 transmitters operating loads –OW version
Transmitter output contacts are not equipped with quench circuit.
When using transmitter outputs for switching inductive loads
(contactor coils, transmitters, electromagnets, solenoids, etc.) it is
required to use an additional quench circuit (typically a 47nF
condenser/ min. 250VAC in series with 100R resistor, connected in
parallel to engaged inductance). Using a quench circuit results in
decreasing the level of interference generated while switching and
increasing the durability of transmitter contacts.
Pic. 8.16 Examples of serial connection of quench circuit:
to transmitter contacts; b) to inductive load

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Tab. 8.1 Terminal assignment table
Connector
Pin
number
Symbol
Terminal description
Rating
POWER
SUPPLY
230VAC version
1
L
supply
230V/50Hz
2
N
OPTIONAL:
POWER
SUPPLY
24VAC/DC
version
1
supply
24V AC/DC
2
POWER
SUPPLY
OW version
1
L/+
supply
20 –250V
AC/DC
2
N/-
SIGNAL INPUT,
EXCITATION
OUTPUT
3
functional ground
4
-
excitation output
24VDC
5
+
6
0
signal ground
7
mA
current input
20mA
8
V
voltage input
10V
ANALOG
OUTPUT,
SERIAL
INTERFACE
9
4-20mA
analog output
4-20mA
10
11
E
RS485 ground
12
A+
RS485 line
13
B-
RELAY
OUTPUT
4P version
14
C
AL1 relay common
1A/250VAC
15
NO
AL1 relay NO
16
C
AL2 relay common
17
NO
AL2 relay NO
18
C
AL3 relay common
19
NO
AL3 relay NO
20
C
AL4 relay common
21
NO
AL4 relay NO
RELAY
OUTPUT
2P version
OW version
14
C
AL1 relay common
1A/250VAC
15
NO
AL1 relay NO
16
NC
AL1 relay NC
17
18
C
AL2 relay common
19
NO
AL2 relay NO
20
NC
AL2 relay NC
21
RELAY
OUTPUT
2P version
14
NC
AL1 relay NC
1A/250VAC
15
NO
AL1 relay NO
16
C
AL1 relay common
17
NC
AL2 relay NC
18
NO
AL2 relay NO
19
C
AL2 relay common
20
21

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9. TECHNICAL PARAMETERS
CATEGORY
PARAMETER
VALUE
COMMENTS
INPUT
accuracy
+/-0.1% FS
Temperature coefficient
+/- 100ppm / °C
Internal resolution
15 bit
Sampling rate
16,6Hz
Filter time constant
0-15,36s
Noise rejection
>=65dB
f=50Hz
CURRENT INPUT
Range
0..20mA
-0.1 .. +21mA
Input resistance
<56Ω
Max. input current
Internally limited
Overvoltage protection level
-0.6...+36V=
transil
VOLTAGE INPUT
Range
0...10V
-0.05 .. +10.5V
Input resistance
>=50kΩ
Overvoltage protection
level
-0.6...+36V=
transil
CONTROL RELAY
OUTPUT
Rating
1A / 250VAC
Contact configuration (2P
version)
2 x NO/NC
Contact configuration (4P
version)
4 x NO
Open contact withstand
voltage
1000VAC
Contact life mechanical /
electrical
15x106/ 106
Load capacity
250VA
resistive load
ANALOG OUTPUT
Range
3..21mA
Output voltage range
10-30VDC
Accuracy
+/- 0.1%
Resolution
12 bit
Temperature coefficient
+/- 100ppm/C
Output voltage effect
+/- 20ppm/V
Overvoltage protection level
36V
transil
Refresh rate
30Hz
SERIAL
INTERFACE
Type
RS485
Protocol
MODBUS RTU
Baude rate
2.4, 4.8, 9.6, 19.2kbps
Data bits
8
Overvoltage protection
level
+7 / -12V
transil
SENSOR
EXCITATION
Voltage
24VDC, +5/-10%
Current max
25mA
Current limit
continuous
Overvoltage protection
level
36V

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POWER SUPPLY
Voltage - AC 230V version
230VAC +10/-20%
20-250V AC/DC
OW version
- AC/DC 24V version
20-35VDC 18-26VAC
- universal version
20-250V AC/DC
OW version
Power consumption
<6W
DISPLAY
Digits / Colour
4 / Green LED
Digit hight
7mm
PMS-970T
20mm
PMS-970P
Bargraph resolution
26
PMS-970T
ENVIRONMENTAL
Operating temperature
5…400C
Storage temperature
-10 …+700C
Humidity (relative)
10-95%
without
condensing
Enclosure protection (front)
IP-65
Enclosure protection (rear)
IP-20
Pollution degree
2
Overvoltage category
II
ELECTRIC
ISOLATION
Power supply –other
circuits
2300VAC
Relay outputs –other
circuits
2300VAC
Signac input –functional
ground
1000VAC
Analog output –signal
input
1000VAC
RS485 signal input
1000VAC
MECHANICAL
Dimension
48x96x120mm
Weight
280g
Panel cut-out
44.5x91mm
Panel thickness
0..15mm
Horizontal spacing
>70mm
axis to axis
Vertical spacing
>120mm
axis to axis
COMPLIANCE
Electrical safety
EN 61010-1:2004
EMC
EN
61326:2002/A3:2004(U)

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10. OPERATION
10.1. Programming
Incorrect programming may cause incorrect read-out and uncontrolled
output relay operations!
The meter has many user-selected programme settings. All settings may be done with front
panel push-buttons. Set-points levels are programmed directly in normal mode. Other
settings require entering programme mode. Programming menu is code protected.
To programming mode press ESC key for 2 seconds until „Code” message
appear Then press: ESC, ▲, ▲, ENT combination. „Fn00” message should
appear.
In programming menu several functions are available. Detailed function description is given
in the table.
Use cursor buttons to navigate through the functions and ENT button to enter selected
function. Numerical values should be set digit by digit. Flashing digit should be adjusted using
cursor buttons and stored with ENT button.
All the settings are stored in non-volatile memory while leaving the programming menu.

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Tab. 10.1 Button function in programming mode
Button
Description
Comments
▲
- scrolling up through menu functions and options
- increasing numerical values
▼
- scrolling down through menu functions and options
- decreasing numerical values
ESC
- ESCAPE
- go to previous menu level
ENT
- ENTER, access to function
- selected value/option confirmation
Tab. 10.2 Programming menu
Menu
function
Description
Available options
Factory setting
Comments
Fn00
input
selection
I - 0-20mA current
input active,
U- 0-10V voltage
input active
I
Fn01
linearization
points
2-16
2
2 - linear scale
Fn02
display
scaling
P01 - Pnn scaling points
P01 : 00.00 : 0000
P02 : 20.00 : 2000
Define input value
and display value
for each scaling
point-(1)
-9.99 - 99.99 input value
(with DP)
-999 - 9999 display value
Fn03
decimal point
0000; 0.000; 00.00;
000.0
00.00
Leading zeros are
suppressed
Fn04
display
rounding
1, 2, 5, 10
1
1 - without rounding
Fn05
filter time-
constant
0 –20ms, 1 - 60ms,
2 - 120ms, 3 - 240ms,
4 - 480ms, 5 - 960ms,
6 - 1.92s, 7 –3.84s,
8 - 7.68s, 9 - 15.36s
2
Fn06
bargraph
mode
3C - three colour
(green, yellow, red);
1C-single colour
(green)
3C
(2)
Fn07
set-point
mode
AL1, AL2, AL3, AL4
AL1 : H : 1
AL2 : L : 1
AL3 : H : 1
AL4 : L : 1
(3)
H - high
L - low
A - alternate
1 –9999 - hysteresis
[display divisions]
Fn08
output
scaling
P01 - zero (low)
P02 - full scale
0000 : 4.00
2000 : 20.00
Define meter's
display value and
output current for
both scaling points.
-999 do 9999 meter's
display value
03.00 to 21.00 [mA]
output current