Lumel P21Z Series User manual

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PROGRAMMABLE TRANSDUCER
OF AC CURRENT
AND AC VOLTAGE SIGNALS
AND FREQUENCY
P21Z TYPE
USER’S MANUAL

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Contents
1. APPLICATION.........................................................................5
2. TRANSDUCER SET...................................................................5
3. BASIC REQUIREMENTS AND OPERATIONAL SAFETY .........................6
4. INSTALLATION .......................................................................7
4.1 Mounting .....................................................................7
4.2 Diagrams of external connections .......................................8
5. OPERATION......................................................................... 10
5.1 Transducer configuration with eCon software........................ 12
5.2 Register map (for version with RS-485)............................... 12
5.3 Manufacturer’s parameters ............................................. 16
6. TECHNICAL DATA.................................................................. 18
7. ORDERING CODE .................................................................. 21

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1. APPLICATION
P21Z transducers are used for converting one parameter:
a.c. voltage, a.c. current or frequency into a standardized direct
current signal, direct voltage signal or digital signal available
through RS485 interface. The transducers are designed also
to work with voltage and current transformers.
P21Z transducer may be configured with PD14 pro-
grammer. This programmer and eCon software enable users
to program the following settings:
measurement averaging time,
converting characteristics
value of output signal when limit value are exceeded,
constraining output signal,
transmission parameters of RS485.
The transducer has galvanic isolation between the indi-
vidual blocks of:
power
measurement input,
output and PD14 programmer.
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2. TRANSDUCER SET
The transducer set includes:
P21Z transducer 1 pc
user’s manual 1 pc
guarantee card 1 pc
cap for programmer socket 1 pc
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3. BASIC REQUIREMENTS
AND OPERATIONAL SAFETY
The operational safety of the transducer is compliant
with the requirements of EN 61010-1 standard
The meaning
of the following symbol: - Attention! Danger!
Observations Concerning the Operational Safety:
All operations concerning transport, installation, and com-
missioning as well as maintenance, must be carried out
by qualified, skilled personnel, and national regulations
for the prevention of accidents must be observed.
Before switching the transducer on, one must check
the correctness of connections to the network.
Before removing the transducer housing, one must switch
the supply off and disconnect measuring circuits.
The removal of the transducer housing during the guaran-
tee contract period may cause its cancellation.
The P21Z transducer is destined to be installed and used
in industrial electromagnetic environment conditions.
One must remember that in the building installation,
a switch or a circuit-breaker should be installed.
This switch should be located near the device, easy
accessible by the operator, and suitably marked.
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4. INSTALLATION
4.1 Mounting
P21Z transducers are designed for mounting
on a 35 mm according to PN-EN 60715. Dimensions and moun-
ting method are presented in Fig. 1.
Fig 1. Dimensions and mounting of the transducer.
Connection of
PD14
programmer

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4.2 Diagrams of external connections
The transmitter transducer has a detachable
terminal strip with screw terminals that enable user to connect
external power supply and output cables with cross section
up to 2.5 mm2. Input signals shall be connected with wires
of a maximum diameter of 1.5 mm2to fixed screw terminals.
Direct measurement
of voltage Indirect measurement with
voltage transformer
Direct measurement of
current
Indirect measurement with
current transformer
I1I2I1I2
I1I2I1I2
I1I2I1I2
I1I2I1I2

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Fig. 2. Electric connections of P21Z inputs.
Direct measurement
of frequency Indirect measurement
of frequency with voltage
transformer
I1I2I1I2
I1I2I1I2
a) analog
output
b) interface
RS-485
Fig. 3. Electric connections of P21Z power supply
and output.
supply analog
output supply

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5. OPERATION
After the transducer is switched on, its Status LED
should illuminate in red (transducer initialization), then it should
turn green (normal operation).
Status LED of the transducer:
when illuminated in green – normal
operation;
when illuminated in red – incorrect
operational parameters; re-configure
the transducer;
when flashes in red – no calibration
or damaged non-volatile memory;
transduce should be returned to the
manufacturer;
LEDs installed only in version with RS485
interface:
RxD LED is on – data receipt;
TxD LED is on – data transmission.
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Fig. 4. P21Z transducer view.
Data entry into the register is confirmed by a short illu-
mination of the Status LED in red.
Before the required number of correct measurements
(according to Table 1) is achieved, the device displays arithme-
tic mean from the completed measurements. Subsequent me-
asurements are added applying the walking window principle,
i.e. the “oldest” measurement is deleted and replaced
by the most recent one. When values outside the measuring ran-
ge are measured, the device indicates it and correct measure-
ments are counted from the beginning. Default time is set to 1s.