Lika IF50 User manual

IF50
User's manual
IF50
Description
IF50 is the small, low-cost yet high-performing converter for industrial
applications suitable for use in installations where incremental counting of
positions or events must be converted to either analogue format or serial data.
The unit has been designed as a compact module with 12 screw terminals and a
9-position UB-D connector (female). The housing is suitable for standard DIN
rail mounting.
Table of contents
1 - afety summary
2 - Identification
3 - Introduction
4 - Mounting instructions
5 - Electrical connections
6 - DIL switch settings
7 – et up procedure
8 - Actual counter state readout via serial port
9 - PC set-up using the O 3.2 operator software
10 – Main window and soft keys
11 - Parameter settings
12 – caling and linearisation functions
13 - Monitor function
14 – Data readout via serial interface
15 - Testing functions
16 - Parameters list
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1 - Safety summary
1.1 Safety
•Always adhere to the professional safety and accident prevention
regulations applicable to your country during device installation and
operation;
•installation and maintenance operations have to be carried out by
qualified personnel only, with power supply disconnected and stationary
mechanical parts;
•device must be used only for the purpose appropriate to its design: use
for purposes other than those for which it has been designed could
result in serious personal and/or the environment damage;
•high current, voltage and moving mechanical parts can cause serious or
fatal injury;
•warning ! Do not use in explosive or flammable areas;
•failure to comply with these precautions or with specific warnings
elsewhere in this manual violates safety standards of design,
manufacture, and intended use of the equipment;
•Lika Electronic s.r.l. assumes no liability for the customer's failure to
comply with these requirements.
1.2 Electrical safety
•Turn OFF power supply before connecting the device;
•connect according to explanation in section ”5 - Electrical connections”;
•in compliance with 2004/108/EC norm on electromagnetic
compatibility, following precautions must be taken:
- before handling and installing the equipment, discharge
electrical charge from your body and tools which may come in touch with
the device;
- power supply must be stabilized without noise; install EMC filters on
device power supply if needed;
- always use shielded cables (twisted pair cables whenever possible);
- avoid cables runs longer than necessary;
- avoid running the signal cable near high voltage power cables;
- mount the device as far as possible from any capacitive or inductive noise
source; shield the device from noise source if needed;
- minimize noise by connecting the unit to ground (GND). Make sure that
ground (GND) is not affected by noise. The connection point to ground can
be situated both on the device side and on user’s side. The best solution to
minimize the interference must be carried out by the user.
1.3 Mec anical safety
•Install the device following strictly the information in the section “4 -
Mounting instructions”;
•do not disassemble the unit;
•do not tool the unit;
•delicate electronic equipment: handle with care; do not subject the
device and the shaft to knocks or shocks;
•respect the environmental characteristics of the device.
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IF50
2 - Identification
Device can be identified through the ordering code and the serial number
printed on the label applied to its body. Information is listed in the delivery
document too. Please always quote the ordering code and the serial number
when reaching Lika Electronic s.r.l. for purchasing spare parts or needing
assistance. For any information on the technical characteristics of the product,
refer to the technical catalogue.
3 - Introduction
IF50 is the small, low-cost yet high-performing converter for industrial
applications suitable for use in installations where incremental counting of
positions or events must be converted to either analogue format or serial data.
The unit has been designed as a compact module with 12 screw terminals and a
9-position UB-D connector (female). The housing is suitable for standard DIN
rail mounting.
The impulse input side provides channels A, B and also the inverted lines /A, /B
which should be used with TTL / R -422 input signals. The unit can count and
convert the following formats to analogue and serial information:
a. Increasing / decreasing count with quadrature input (A/B, 90). The
polarity of the analogue output and the sign of the serial data depend
on the sign of the actual counting result.
b. ingle channel impulses on channel A. Input B sets the counting
direction and therefore also the polarity of the output (LOW = negative,
HIGH = positive).
Please observe:
Open NPN inputs are HIGH;
Open PNP inputs are LOW;
Open R -422 inputs may cause problems, therefore please set
unused inputs to HTL by means of the DIL switches.
c. Dual count of fully independent events on channels A and B, where the
output signal represents the sum or the difference of both counts.
The definitions for “zero analogue output” and “full scale analogue output” can
be set over the full counting range of ±8 decades (-99 999 999 to [phone]).
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Applicable encoders and sensors
The converter can accept the following impulse sources:
1. Quadrature encoders with HTL level output (10 – 30 V) and either PNP
or NPN or Push-Pull or NAMUR characteristics, using A and B outputs
with 90° displacement
2. ingle channel impulse sources like proximity switches or photocells,
providing HTL level at PNP or NPN or Namur characteristics
3. TTL / R -422 quadrature encoders with output lines A, /A ,B and /B
4. ymmetric single channel sources with TTL / R -422 output, providing
differential signals (i.e. A and /A)
5. Asymmetric single channel sources with TTL level (without inverted
signals, i.e. A only)
In general, HTL encoders will be supplied from the same source as the converter.
The unit provides an auxiliary 5.5 volts output (stabilized, max. 250 mA) to
supply TTL encoders.
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IF50
4 - Mounting instructions
WARNING
Mount the unit with power supply disconnected.
IF50 converter must be installed and protected inside the electric panel. It
provides DIN rail mounting and can quickly snap onto a DIN rail with built-in
DIN rail clips that require no additional brackets or supports.
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IF50
5 - Electrical connections
WARNING
Turn OFF the power supply before connecting the device.
We recommend connecting the Minus wire of the power supply to earth
potential.
Please note that, under poor earthing and grounding conditions, multiple earth
connections of shields and GND terminals may cause severe problems. In such
cases it may be better to have only one main earthing point for the whole
system.
GND terminals 4, 6 and 12 are connected internally. Depending on the input
voltage and the load of the auxiliary voltage output, the total power
consumption of the unit is approx. 70 mA (see the datasheet).
5.1 Incremental encoders TTL / RS-422
If applicable, the encoder can be supplied by the IF50 converter. If the encoder is
already supplied by a remote source, we recommend fully differential operation,
with no GND connection between encoder and converter (see Figure below).
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5.2 Incremental encoders HTL / 12-30V
The encoder can be supplied by the same source as the converter or by another
source.
5.3 Proximity switc es, p otocells etc.
This connection is fully similar to a HTL incremental encoder. With single-
channel operation, input B remains unconnected or can be used to select the
output polarity. With use of two independent counting events in order to obtain
the sum or the difference, input B operates as the second counting input.
For use of sensors providing 2-wire NAMUR characteristics:
1. set the inputs to HTL and NPN;
2. connect the positive wire of the sensor to the corresponding input and
the negative wire to GND.
5.4 CONTROL input
CONTROL input available on terminal 10 provides programmable characteristics
and functions for the activation of different commands (e.g. Reset, see section
“11.7 Input settings“ on page 66).
5.5 Analogue outputs
The unit provides a -/+10V voltage output and a 0-20 mA / 4-20 mA current
output at a resolution of 14 bits, i.e. the voltage output operates in steps of 1.25
mV and the current output operates in steps of 2.5 µA. The nominal load of the
voltage output is 2 mA, the current output accepts loads between 0 and 270 .
The analogue ground uses a separate terminal, which however is internally
connected to the GND potential of the power supply.
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IF50
5.6 Serial interface
The unit provides a R -232 interface and a R -485 interface, however only one
can be used at a time. erial communication allows to read out the counting
result and to set parameters and variables via PC, according to need.
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IF50
6 - DIL switc settings
The unit is fitted with two 8-position DIL switches; one (DIL1) is located on the
top side while the other (DIL2) is located on the bottom side of the unit. These
switches provide customer-specific settings of desired operating modes in a
very quick way.
NOTE
Changes in the switch settings will become effective only after the next power-
up cycle!
Positions 7 and 8 of switc DIL2 are intended for internal factory use only
and must be set both to OFF at any time during normal operation.
6.1 Basic mode of operation and power-down memory setting
Positions 2 and 3 of switc DIL1 on the upper side set the mode of operation;
while position 4 allows to set the power-down behavior of the unit.
Position 4 OFF: Power-down memory OFF. Upon power up the counter either
resets to zero or sets to the value programmed next to the items
Set value A and Set value B 2).
Position 4 ON: Power-down memory ON. Upon power up the counter re-loads
the value stored previously before power down.
2 ee parameter Power Up Mode.
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6.2 Impulse levels and symmetric / asymmetric input formats
Positions 5 and 7 of DIL1 along with positions 3 to 6 of DIL2 allow the
operator to set the full variety of options suited to customize levels and formats.
NOTE
1. The tables below use the following definitions: „0“ = switch OFF, „1“ =
switch ON; „x“ means negligible position.
2. witch settings refer to impulse inputs A / B only, but the CONTROL
input (terminal 10) always provides HTL / PNP format, i.e. you must
apply a 10 - 30 volts positive voltage to activate the function.
3. When you use 2-wire sensors with NAMUR characteristics, connect the
positive pole of the sensor to the corresponding input terminal and the
negative pole to GND.
4. When you find (A) or (B), this indicates that the inputs expect
asymmetric (single-ended) signals and you will not need to provide the
corresponding inverted signals.
5. On the other side when you find (A and /A) or (B and /B), this indicates
that the inputs expect symmetric differential signals according to R -
422 standard, i.e. it is compulsory to apply also the inverted signals.
6.2.1 Standard settings
If you just use encoders or sensors according to common industrial standards,
and further if all input signals should have the same level, you just can use one
of the following three standard settings and do not need to consider the whole
list of options for the switch settings.
DIL1 DIL2 Input c aracteristics Encoder / sensor type
5 6 7 3 4 5 6
0 0 0 0 0 0
Asymmetric HTL input (A, B), 10 - 30 V
level, NPN (switching to -) or Push-Pull or
NAMUR characteristics
tandard HTL encoders,
proximity switches, photo
switches, etc.
1 0 0 0 0 0
Asymmetric HTL input (A, B), 10 - 30 V
level, PNP (switching to +) or Push-Pull
characteristics
PNP proximity switches,
photo switches, etc.
0 1 0 0 0 0
ymmetric TTL signals or R -422 signals (A,
/A), (B, /B) (differential, including inverted
signal)
tandard TTL encoders
providing A, /A, B, /B
output channels
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