Proces-Data PD 3260 PMM Bedienungsanleitung
502 069 02
GB February 1997
PROCES-DATA A/S, Navervej 8, 8600 Silkeborg, Denmark, Phone +45-87 200 300, fax + 45-87 200 301
POWER MONITOR MODULE
PD 3260 PMM
Manual
502 069 02
II/IV Power Monitor, PD 3260 Manual
© Copyright 1997 by PROCES-DATA A/S. All rights reserved.
PROCES-DATA A/S reserves the right to make any changes without prior notice.
P-NET, Soft-Wiring and Process-Pascal are registered trademarks of PROCES-DATA A/S.
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Manual Power Monitor, PD 3260 III/IV
Contents Page
1 General information. ................................................... 1
1.1 Features. ........................................................ 2
1.2 System description. ............................................... 2
1.3 Channels/registers. ............................................... 4
1.4 Connections. .................................................... 5
1.5 Memory types. ................................................... 6
2 Service Channel (channel 0). ............................................. 8
3 Digital I/O Channel (channel 1 - 8). ...................................... 15
4 Common I/O Channel (channel 9). ....................................... 26
5 Power Monitor Channel (channel A). ..................................... 30
5.1 Connections to the Power Monitor Channel. .......................... 39
6 Generator Switch Channel (channel B). ................................... 41
6.1 Connections to Generator Switch Channel. ........................... 49
7 Thyristor Switch Channel (channel C). .................................... 51
7.1 Connections to Thyristor Switch Channel. ............................ 57
8 Calculator program. ................................................... 58
9 Program Channel (channel D). .......................................... 59
10 Data Channel (channel E). .............................................. 71
11 Construction, Mechanical. .............................................. 74
12 Specifications. ....................................................... 75
12.1 Power supply. .................................................. 75
12.2 Digital Input. ................................................... 75
12.3 Digital Output. .................................................. 75
12.4 Power Monitor. ................................................. 76
12.5 Generator Switch. ............................................... 76
12.6 Thyristor Switch. ................................................ 76
12.7 Calculator program. .............................................. 76
12.8 Ambient Temperature. ........................................... 77
12.9 Humidity. ...................................................... 77
12.10 Approvals. ..................................................... 77
13 Survey of variables in the PD 3260 module. ............................... 78
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IV/IV Power Monitor, PD 3260 Manual
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1 General information.
The PD 3260 Power Monitor is a member of the 3000 series of modules from PROCES-DATA.
It provides a three-phase Power
Line Monitor and Generator Switch
Controller interface to the P-NET
Fieldbus EN50170 Vol 1.
The monitoring functionsoffered by
the module are useful for assessing
the operation of electric generators,
and for monitoring loads connected
to three-phase power lines, or those
having up to 3 single phases.
The generator switch functions are
designed to perform phase, speed
and acceleration controlled switch-
ing of synchronous or asynchronous
generators, connected to three-
phase power lines.
Switching is performed using the Digital Output Channels or via the Thyristor Switch Channel.
P-NET is a fieldbus network, designed for process control and data collection. The PD 3260
module has been developed to directly interface with digital process signals.
Configuration of the module for the functions required, and communication between the module
and a control computer, is carried out via the P-NET fieldbus. The PD 3260 module can be
controlled via P-NET, or it can operate as an autonomous unit.
The module possesses a programmable Calculator, which can be purpose programmed to control
the digital outputs and monitor the digital inputs. The Calculator can operate on a variety of
variable types, such as reals, integers, bytes, booleans, timers and arrays. User programmes can
be devised to produce application specific functions, such as digital control loops, and PLC
functions may be set up for use in a wide variety of local autonomous process applications.
The compact design and outstanding environmental specifications for the Power Monitor, makes
it an ideal process component in industrial, as well as less stringent environments.
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1.1 Features.
&
Power Monitor Channel with three-phase current and voltage inputs.
&
Generator Switch Channel with tachometer and voltage inputs.
&
Thyristor Switch Channel with six modulated outputs for a three-phase thyristor switch.
&
8 Digital I/O Channels with automatic output functions.
&
Output current measurement and overload protection.
&
Common I/O Channel.
&
Programmable Calculator and Internal Data Channel.
&
Continuous self test.
&
Watch Dog Timer.
&
P-NET Fieldbus Communication (EN50170, Vol. 1).
&
Rail mounting module (DIN / EN).
&
EMC approved (89/336/EEC).
1.2 System description.
Power Monitor Channel
The Power Monitor channel has current and voltage inputs for the monitoring of a three-phase
power line. RMS current, RMS voltage, Power factor, Power and Energy are continuously
measured for each of the three phases. Input overload alarms, for the current and voltage inputs,
can be enabled.
Total effective power is calculated, and the level can be monitored by enabling user presettable
HighLevel and LowLevel alarms. In addition, the total effective power is integrated over time,
to provide Total, Produced and Consumed Energy values. The line frequency is continuously
measured.
Generator Switch Channel
The Generator Switch channel can be used to connect accelerating synchronous or asynchronous
generators to a power line. The channel measures generator phase, speed and acceleration in order
to calculate the moment in time when the generator should be connected to the power line. The
generator switch channel can be used to control a digital output channel driving a circuit breaker,
or the Thyristor Switch Channel. A configurable switch-on period value can be used to
compensate for relay contact delay.
Thyristor Switch Channel
The Thyristor Switch Channel performs ramp controlled thyristor triggering for three-phase
thyristor switches. The digital outputs I/O 1 to I/O 6 are used as the controlled outputs for this
channel.
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Digital I/O Channels:
Various automatic functions can be selected within each digital channel, such as automatic
feedback control (single, as well as double), one-shot output and pulse output. This reduces such
basic operations having to be performed at a remote central control point.
The output current (Sink), is measured continuously on each channel, and can be read as a value
in Amps. If the current exceeds the specified max value, the output is switched off, and an error
code (overload) is generated in the module.
The common I/O channel in the module, provides the ability to read/set all inputs/outputs, using
a single P-NET transmission.
General
The unit offers comprehensive self-testing features, which enables the reporting of disconnection,
overload and process failure. All outputs are protected against overload.
The watchdog timer ensures the safe shut down of a process following a communication error or
power failure.
The PD 3260 is approved in compliance with the EMC-directive no 89/336/EEC. Test limits are
determined by the generic standards EN 50081-1 for emission and EN 50082-2 for immunity.
The PD 3260 is approved in compliance with the IEC 68-2-6 Test Fc standard for vibration.
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1.3 Channels/registers.
The PD 3260 module contains:
1 Service channel (channel $00) 8 Digital I/O`s (channel $01-08)
1 Common I/O channel (channel $09) 1 Power Monitor (channel $0A)
1 Generator Switch (channel $0B) 1 Thyristor Switch (channel $0C)
1 Program channel (channel $0D) 1 Data channel (channel $0E)
A set of 16 variables, numbered from 00 - $0F, is associated with each channel. For addressing
a variable within a particular channel, a logical address called a SoftWire Number (SWNo), is
used. The SWNo is calculated as: (channel number
$10 + variable number within the channel).
Example: Variable 4 on channel 3 needs to be addressed.
The SWNo will therefore be $34.
Throughout the manual, the variables are depicted as tables. The variable names are standard
identifiers, as defined in Process-Pascal.
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1.4 Connections.
The PD 3260 Power Monitor is
physically designed as a black box,
having two 14 pin connectors with
screw terminals. The connectors are
removable and equipped with a key
pin, to avoid reversed connections.
Connection identities are printed on
the top of the module. The module
wiring should be designed with a
maximum of 2 wire connections in
each screw terminal.
The module has a built in fuse,
which is used to protect the module,
and externally connected wiring and
equipment. When connecting exter-
nal equipment, the additional fuse
protected +24 V screw terminals
should be used (see hardware dia-
gram).
Hardware diagram, principle.
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1.5 Memory types.
The PD 3260 stores data in different types of memory, depending on the value of a control
variable following a reset or a power failure, and the state of write protection.
Some variables are stored in both non-volatile and volatile memory. The state of the module's
WriteEnable register, determines whether the contents are changed in both types of memory, or
only in the volatile type.
The following memory types are listed in the channel definition tables.
Read Only
PROM ReadOnly
The PROM is always write protected and can never be changed.
RAM ReadOnly
The variable is stored in RAM and is only accessible for Reading.
Read Protected Write
EEPROM RPW (Read, Protected Write)
The EEPROM is always write protected directly following a reset. By setting
WriteEnable to TRUE, the contents of the EEPROM can be changed. The contents
of the EEPROM will remain unchanged during and after a power failure.
Read Write
RAM ReadWrite
The variable can be changed instantly. After reset or a power failure, it's value is
set to zero.
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