Presys PROFI BUS DMY-2015-PB User manual

Digital Multi-Point
Indicator DMY-2015-PB
EM0326-00
TECHNICAL MANUAL
R
Energy
presys

CAUTION!
In case of failure, the instrument can provide AC voltage levels in its metal box, which
for safety reasons must always be connected to an effective ground point. To this end a
suitable terminal is provided on the back of the box identified as GND. Never connect this
terminal to the neutral terminal of power supply.
It is recommended the use of an external fuse (2 A) on the power input of the
instrument. There is an internal fuse.
Operation of relays - Important Note!
When the instrument has relay module for alarm or control, you must follow the
instructions in this manual in the maintenance section on the snubber use.
The snubber is a protection against noise coming from the opening / closing of the
relay contacts, but depending on the application may be necessary to remove this snubber!
CAUTION!
The instrument described in this manual is a device for use in specialized technical
area. The user is responsible for configuration and selection of values of the instrument
parameters. The manufacturer warns of the risks of occurrences with damage to both the
person and the property resulting from the incorrect use of the instrument. The information
and specifications in this manual are subject to change without previous notice.
presys

PRESYS  Instruments DMY-2015-PB-Energy
EM0326-00
Table of Contents
1.0 - Introduction ............................................................................................................1
1.1 - Description ............................................................................................................ 1
1.2 - Order Code ........................................................................................................... 2
1.3 - Technical Specifications ........................................................................................ 3
2.0 - Installation ..............................................................................................................5
2.1 - Mechanical Installation .......................................................................................... 5
2.2 - Electrical Installation ............................................................................................. 6
2.3 - Process Input Signal Connections ........................................................................ 6
2.3.1 - RTD Connections ........................................................................................... 7
2.4 - Alarm Output Connection ...................................................................................... 8
2.5 - Connections Diagram ........................................................................................... 9
2.6 - Communication ................................................................................................... 10
2.6.1 - Profibus DP-V0 Protocol ............................................................................... 10
3.0 - Operation ..............................................................................................................11
3.1 - Normal Operation ................................................................................................ 11
3.2 - Configuration....................................................................................................... 13
4.0 - Maintenance..........................................................................................................22
4.1 - Indicator Hardware ............................................................................................. 22
4.2 - Using Snubber with relays ................................................................................... 23
4.3 - Installation of optional modules ........................................................................... 24
4.4 - Calibration ........................................................................................................... 25
4.5 - Hardware maintenance instructions .................................................................... 27
4.6 - List of components .............................................................................................. 29
4.7 - List of recommended spare components ............................................................ 32
5.0 - PROFIBUS Communication.................................................................................33
presys

PRESYS  Instruments DMY-2015-PB-Energy
Introduction
Page 1
1.0 - Introduction
1.1 - Description
PRESYS Digital Multi-Point Indicator DMY-2015-PB-Energy is ideal for security
applications in turbines, hydroelectric plants and thermoelectric generators. It is a
microprocessor-based instrument with up to 8 inputs for monitoring RTD sensors. It has
non-volatile internal memory (E2PROM) to store calibration values. Its accuracy is
warranted by autocalibration techniques based on a high thermal stability voltage
reference.
It is able to communicate in a Profibus-DP-V0 network.
RTD inputs are linearized automatically by tables stored in the EPROM memory.
All configuration data can be protected by password and are stored in non-volatile
memory in case of an external power failure.
Designed within the concept of modularity, the indicator supports up to 2 output
cards for alarm. The output types can be: SPDT relay, solid state relay and open
collector voltage. In case of sensor break, the trip alarms are not triggered (configurable
for both relays). In addition to the high and low alarms, you can set the indicator for
failure alarms (Watchdog) triggered by detecting the sensor breaks connected to the
inputs.
Fig.1 - DMY-2015-PB-Energy Indicator front panel
It allows the use of a universal power supply from 75 to 264 Vac 50/60Hz or 100
to 360 Vdc (any polarity).
The instrument has an extruded aluminum case which makes it highly immune to
electrical noise, electromagnetic interference and resistant to the most severe conditions
of industrial usage.
The front panel has a high visibility display configurable up to 4 digits which can
show the process variable of each channel or a set of selected channels in the scan
mode. During configuration, the display shows mnemonics and parameter values. The
presys

PRESYS  Instruments DMY-2015-PB-Energy
Introduction
Page 2
Indicator also presents another two-digit display for identification of the channel viewed.
The leds can be used as a visual indication of alarm for each channel.
The alarm outputs can be configured, independently, to operate with retention,
demanding the operator acknowledge by means of the front panel keys in order to
deactivate them after the process variable returns to normal condition.
1.2 - Order Code
DMY-2015-PB
-
1
A
-
B
-
C
-
D
-
E
-
F
-
E
G
Field A
Inputs
1
8 RTD inputs
Field B
Output 3
0
Not used
1
SPDT Relay
2
Open collector voltage
3
Solid State Relay
Field C
Output 4
Same code as output 3
Field D
Power Supply
1
75 to 264 Vac 50/60Hz or 100 to 360 Vdc (any polarity)
2
24 Vac or 24 Vdc (10 %)
3
12 Vdc (10 %)
Field E
Communication
4
Profibus DP-V0
Field F
Case Protection Grade
0
General usage, sheltered place
1
Front aspersion-proof
2
3
Weather-proof
Explosion-proof (BR-Ex d IIB T6 Gb IP 66)
horizontal display(*)
(*) Explosion proof box:
Dimensions: 310x310x200 mm (HxWxD)
Weight: 11kg nominal
Field G
Application
E
Energy
presys

PRESYS  Instruments DMY-2015-PB-Energy
Introduction
Page 3
Note 1 - The indication, relay usage as alarms and alarm points are, among other
things, items that the user can program through a front key (if wanted, specify these
information so that all the configuration can be made by PRESYS).
Note 2 - Hardware and software features are available under previous consult.
Code Example:
1) DMY-2015 - PB - 1 - 1 - 1 - 1 - 4 - 0 - E
This code defines an indicator DMY-2015-PB-Energy for 8 RTD inputs with two
SPDT relays which can be used as high, low and failure alarm (sensor break alarm), 75
to 264 Vac 50/60Hz or 100 to 360 Vdc electric power supply, for use in a sheltered place.
The trip function is configurable for both relays. It has communication Profibus DP-V0.
1.3 - Technical Specifications
Inputs:

Pt-100 RTD inputs under DIN 43760
Table 1 shows the temperature ranges for RTD
Input sensor
Range
°F
°C
RTD
2 or 3-wire Pt-100
-346.0
752.0
-210.0
400.0*
(*) includes wire resistance
Table 1 - Measuring ranges for input sensors
presys

PRESYS  Instruments DMY-2015-PB-Energy
Introduction
Page 4
Outputs:
 Up to 2 SPDT relays for alarm rated 3 A/220 Vac.
 Logic signal, open collector transistor, 24 Vdc, 40mA max. with isolation
 Solid-state relay, rated 2 A/250 Vac with isolation.
Serial Communication:
RS485, with communication protocol Profibus DP-V0
Configuration:
By front panel push-buttons.
Sampling rate:
480 ms sampling rate. The display is updated each second.
Accuracy:

0.1 % of full scale for RTD.
Linearization:

0.1

C for RTD.
Thermal stability:

0.005 % /

C of span with reference to 25

C ambient temperature.
Power supply:
75 to 264 Vac 50/60Hz or 100 to 360 Vdc (any polarity), 10 W nominal; 24 Vac/dc
(

10 %); 12 Vdc (

10 %).
Operating ambient:
0 to 50 °C temperature and 90 % maximum relative humidity.
Dimensions:
¼ DIN (96 mm x 96 mm x 187 mm), HxWxD,
panel cut of 92 mm x 92 mm, HxW.
Weight:
0.7 kg nominal.
Warranty:
One-year
presys

PRESYS  Instruments DMY-2015-PB-Energy
Operation
Page 5
2.0 - Installation
2.1 - Mechanical Installation
DMY-2015-PB-Energy Indicator front panel has 1/4 DIN size (96 X 96 mm).
It is fixed by the rails which press it against the back side of the panel.
After preparing a 92 x 92 mm cut in the panel, remove the rails from the Indicator
and slide its rear through the cut until its front reaches the panel. Place the rails again in
the Indicator from the back of the panel and tighten the screws as shown in figure 2.
Fig. 2 - Dimensional drawing, panel cutout and side view
presys

PRESYS  Instruments DMY-2015-PB-Energy
Operation
Page 6
2.2 - Electrical Installation
The DMY-2015-PB-Energy indicator may be powered up by voltage between 75
and 264 Vac or 100 to 360 Vdc, any polarity. Remember that the internal circuit is
powered whenever the instrument is connected to the external power supply.
Connections of process input and output signals should only be done with the
instrument turned off.
Figure 3 shows the instrument I/O terminal scheme with all designations for power
supply, grounding, communication and process input and output signals.
Signal wiring must be kept far away from power wires.
Due to its metal case the instrument ground should be connected to earth ground.
Never connect the ground to neutral terminal.
Fig.3 - Indicator terminals
2.3 - Process Input Signal Connections
The Indicator presents specific inputs for connection of RTD sensors. See the
different types and ranges of input sensors in table 1, section 1.3 on Technical
Specifications.
In order to avoid noise in the wiring, use twisted pair cable and cross sensor
connection wire inside a metallic tube or use shielded cable. Make sure to connect only
one shield wire end either to board terminal or to sensor ground, as shown in the next
items.
WARNING: GROUNDING TWO SHIELD WIRE ENDS MAY CAUSE NOISE IN THE
INDICATOR.
presys

PRESYS  Instruments DMY-2015-PB-Energy
Operation
Page 7
2.3.1 - RTD Connections
Connection is allowed for 2, 3 or 4 wires RTD. All types of connection are shown
in figure 4, and the connection terminals for RTD are described in table 2 below for each
channel.
Channel
Terminals
3rd wire Terminal
1
1 and 3
2
2
4 and 6
5
3
7 and 9
8
4
10 and 12
11
5
13 and 15
14
6
16 and 18
17
7
19 and 21
20
8
22 and 24
23
Table 2 - RTD input terminals
Fig.4 - RTD connection
A 2-wire RTD is connected, for example, to terminals 1 and 3 when using input 1
as shown in Figure 4.
A 3-wire RTD is connected in the same way as explained for a 2-wire RTD,
adding the connection of the compensation wire to terminal 2 for input 1.
Connect a 4-wire RTD as indicated for a 3-wire RTD and keep its forth wire
disconnected. See figure 4.
presys

PRESYS  Instruments DMY-2015-PB-Energy
Operation
Page 8
With a 3-wire RTD one gets a better accuracy than with a 2-wire RTD.
Use wires of same material, gauge and length on all 3 terminals of each channel
for compensating resistance. The maximum resistance of each connection wire must be
10 . Use 18 AWG wire (minimum) for distances up to 50 m and 16 AWG for distances
greater than 50 m.
2.4 - Alarm Output Connection
The Indicator presents up to two alarm outputs obtained through the installation of
modules with SPDT relay (up to 2), open collector voltage or solid state relays. Figure 5
illustrates the Indicator outputs.
See sections 3.2 on Configuration and 4.3 on Optional module Connection
for details on configuration and installation of optional modules.
(*)The relay contacts assume that the instrument is powered off.
Fig.5 - Output Connections
presys

PRESYS  Instruments DMY-2015-PB-Energy
Operation
Page 9
2.5 - Connections Diagram
presys

PRESYS  Instruments DMY-2015-PB-Energy
Operation
Page 10
2.6 - Communication
The DMY-2015-PB-Energy Indicator has serial communication with Profibus
DP-V0 protocol.
2.6.1 - Profibus DP-V0 Protocol
See Item 6.0 - PROFIBUS Communication.
presys

PRESYS  Instruments DMY-2015-PB-Energy
Operation
Page 11
3.0 - Operation
3.1 - Normal Operation
DMY-2015-PB-Energy Indicator has two modes of operation: normal mode
and configuration mode.
During normal operation, the Indicator monitors the inputs, verifies alarm
conditions and activates the alarm outputs when necessary. Configuration mode is
used to select and configure all the Indicator parameters.
The normal operation mode, in which the Indicator is to be found most of the
time, is called level zero. In this level, the four front panel keys have the following
functions:
Key
Function
UP
Switch the instantaneous value of the channels on
display in ascending order. Lets continue with the
automatic scanning of channels after your break.
DOWN
Switch the instantaneous value of the channels on
display in descending order. Pauses automatically the
scan of the channels and displays in descending order
the channels with non-zero display time.
ACK
Features, if any, mnemonics corresponding to:
- Disabled relays (trip alarms) due to the input sensor
break (FLT.3 and FLT.4);
- Alarms that require recognition or admit reset to return
to normal state (AC.RL.3 and AC.RL.4);
- Leds with retention (AC.L.1 to A.L.11) (*).
ENTER
Changes from zero to level 1 or asks for a password
depending on configuration.
When they have the mnemonics accessed via the ACK
button:
- Reactivates the relay with trip alarm that has been
disabled due to input sensor break (FLT.3 and FLT.4);
- Effectives relay recognition (AC.R.3 and AC.R.4) or led
(AC.L.1 to AC.L.11) with retention after the alarm
condition; and
- Effectives relay reset (AC.R.3 and AC.R.4) (*).
(*)To show again the value of the monitored variable, still pressing the ACK key. If no relay or LED with activated retention, or relay that
admits reset, the display No.Rt.
presys

PRESYS  Instruments DMY-2015-PB-Energy
Operation
Page 12
On the front panel of the instrument, the LEDs 1 to 8 are associated with alarms for
channels 1 to 8, while the leds 10 and 11 depend on the states of the relays 3 and 4,
respectively. When you activate a relay, the corresponding LED is on, and its deactivation
causes the LED is switched off. The LED 12 indicates that the instrument is connected to the
Profibus network.
In the operation mode it is possible to re-enable the trip alarms configured with failure
manual reset (see section 3.2 - Configuration: Level 3 - Alarms) by following the procedure
below:
(i) The message "B.OUT" flashes when viewing a channel, indicating that the sensor is
broken and the relays with trip alarm were disabled;
(ii) Reconnect the sensor to the instrument terminals;
(iii) The display shows alternatively the value of the process variable and the mnemonic
"FALT" (relays 3 and/or 4 disabled);
(iv) Enable the relays with TRIP alarms according to the steps below:
1. press ACK to show the mnemonic of the disabled relay (“FLT.3” or “FLT.4”);
2. press ENTER;
3. “FLT.3” or “FLT.4” disappears.
4. the display starts to show the next trip alarm mnemonic, if any, or relay
mnemonic (AC.R.3 to AC.R.4) or led (AC.L.1 to A.L.11) latching requiring
acknowledgment.
In order to pass to the next mnemonic without re-enabling the trip relay or
acknowledging an alarm relay or led under latch condition, one must press the ACK key
once again. After all available mnemonics are shown, the display returns to the channel
process variable indication.
Note: If more than one relay is off, you must turn them in sequence, relay 3 to relay
4, pressing ENTER for the mnemonics “FLT.3” and/or “FLT.4”.
presys

PRESYS  Instruments DMY-2015-PB-Energy
Operation
Page 13
3.2 - Configuration
In order to access configuration mode the operator is required to provide a
password which avoids a non-authorized person to change any critical parameters of the
process.
So, when ENTER is pressed within the normal operation mode, one of the
following events can happen, depending on the current configuration:
i) To access directly level 1 (GENERAL) of configuration mode, which indicates
the instrument was not configured with a password system.
ii) To display the PASS warning, indicating that the instrument is provided with a
password system (a key sequence or a value), according to figure 6.
Fig.6 - Password through key sequence or value
In case of a key sequence password, the user should press the UP, DOWN and
ENTER keys (exactly in this order) to access the configuration levels.
For a value password, the user must press the ENTER key for a second time in
order to view the number 0000 with the right end digit blinking. The position which is
blinking indicates the digit in the number to be changed by the user with the UP and
DOWN keys. Move to the digits on the left by pressing ENTER. After entering all digits,
press ENTER again. If the password is correct level 1 is accessed; otherwise, it returns
to normal operation (see figure 6).
The user can choose also both password systems, key and value. In this case, if
the user provides an incorrect sequence of keys, the display goes immediately to the
value password system.
The password number may be chosen by the user (personal) or it could be used
the number 2015. Note that the number 2015 is always accepted by the value password
system, which helps the user in case he forgets his password. In order to enter a number
for password or for any other parameter use the Indicator front panel keys with the
following functions:
presys

PRESYS  Instruments DMY-2015-PB-Energy
Operation
Page 14
Key
Function
SOBE
Increases the digit
DESCE
Decreases the digit
ENTER
Moves to digit on the left
All configuration parameters are stored in the non-volatile memory and determine
the instrument normal operation. Through such parameters the user can adapt the
instrument according to his requirements, if he desires to change the factory
configuration.
The configuration parameters are distributed over five increasing hierarchical
levels, as shown in figure 7. In order to go through those levels and access the
corresponding parameters the user may use the Module front keys with the following
functions:
Key
Function
ENTER
Choose the level
UP
Switches to a higher level
DOWN
Switches to a lower level
Note: in the following diagrams, the Module display is represented by rectangles in
response to the selection of ENTER, UP and DOWN keys.
Fig.7 - Parameter levels diagram
presys

PRESYS  Instruments DMY-2015-PB-Energy
Operation
Page 15
The hierarchical levels are presented in sequence. The options of each level with
all corresponding parameters are explained step by step.
Within each level, the front panel keys of the instrument have the following
functions:
Key
Function
UP
Scrolls the options in ascending order
DOWN
Scrolls the options in descending order
ENTER
Confirms or advances the options within the level
whenever the display does not show ESC. When the
display shows ESC, one goes back one or more positions.
Level 1 - General
In level 1 we have the options: TAG, V.SFT, PASS e INDC (see figure 11).
TAG - consists in an alphanumeric identification for the instrument. The procedure
to enter the tag or any other parameter is the same as described previously for the
password (refer to value password for the functions of the ENTER, UP and DOWN keys).
SOFT - shows software version.
PASS - allows the user to enable or disable the password system for accessing
the configuration mode. The password system may be chosen as a key sequence, a
value (number chosen by the user and number 2015) or both. The correct key sequence
is obtained by pressing the UP, DOWN and ENTER keys in this order.
INDC - is an option for the visualization of the measured variables on the display.
It allows the user to view the values of different channels only by pressing the UP and
DOWN keys, or it sets the instrument to change automatically the indication of different
measured variables among some selected channels. In order to enable the automatic
scan mode, choose the YES option for INDC and provide the exhibition times (given in
seconds) for viewing each channel (channel 1 is the only one whose time cannot be
zero). The exhibition time configured for a channel refers to the indication of the
measured variable.
In operating level, you can make a pause in auto scan the channels via the front
panel keys. Use the DOWN button to make a pause in the scanning and display each
channel with nonzero display time. To continue automatic scanning, press UP.
presys

PRESYS  Instruments DMY-2015-PB-Energy
Operation
Page 16
Fig.8 - General Level Options
Below is the adjustable range of the parameters shown in Figure 8.
Mnemonic
Parameter
Range
Factory
Value
Units
TAG
instrument
identification
_______________
2015
____________
SOFT
software version
_______________
1.31
____________
VALUE
user password
-999 to 9999
0
____________
TIME1
channel 1 exhibition
time
1 to 3000
5
seconds
TIME2 to
TIME8
channels 2 to 8
exhibition time
0 to 3000
1
seconds
presys

PRESYS  Instruments DMY-2015-PB-Energy
Operation
Page 17
Level 2 - Inputs
The Input Level allows to enable or disable (by means of the ANNUL option), the
sensor type of each channel. The sensor type options are 2 and 3-wire for RTD inputs as
shown in figure 9.
Fig.9 - INPUT Level options
Below is the adjustable range of the parameters shown in Figure 9.
Mnemonic
Parameter
Range
Factory
Value
Units
OFFSET
constant added to
display indication
-999 to 9999
0
EU
FILTER
time constant of 1st
order digital filter
0.0 to 25.0
0.0
seconds
(**) EU - Engineering Unit
DC.PT - sets the decimal point position for visualization of Engineering units in
display. There are up to one decimal place or none.
OFST - allows the user to enter an off-set value in Engineering Units to be added
to the measured variable. This is useful in case of monitoring instruments that have the
presys