SMARTEH LPC-2.VV4 Longo Programmable Controller User Manual

: July 30, 2024
: SMARTEH

Table of Contents

ABBREVIATIONS
DESCRIPTION
FEATURES
INSTALLATION
TECHNICAL SPECIFICATIONS
SPARE PARTS
CHANGES
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SMARTEH LPC-2.VV4 Longo Programmable Controller User Manual

Version 3

SMARTEH d.o.o. / Poljubinj 114 / 5220 Tolmin / Slovenia / Tel.: +386(0)5 388 44 00 / e-mail: info@smarteh.si / www.smarteh

STANDARDS AND PROVISIONS: Standards, recommendations, regulations and provisions of the country in which the devices will operate, must be considered while planning and setting up electrical devices. Work on 100 .. 240 V AC network is allowed for authorized personnel only.

DANGER WARNINGS: Devices or modules must be protected from moisture, dirt and damage during transport, storing and operation. WARRANTY CONDITIONS: For all modules LONGO LPC-2 – if no modifications are performed upon and are correctly connected by authorized personnel – in consideration of maximum allowed connecting power, we offer warranty for 24 months from date of sale to end buyer. In case of claims within warranty time, which are based on material malfunctions the producer offers free replacement. The method of return of malfunctioned module, together with description, can be arranged with our authorized representative. Warranty does not include damage due to transport or because of unconsidered corresponding regulations of the country, where the module is installed.
This device must be connected properly by the provided connection scheme in this manual. Misconnections may result in device damage, fire or personal injury.
Hazardous voltage in the device can cause electric shock and may result in personal injury or death.
NEVER SERVICE THIS PRODUCT YOURSELF!
This device must not be installed in the systems critical for life (e.g. medical devices, aircrafts, etc.).
If the device is used in a manner not specified by the manufacturer, the degree of protection provided by the equipment may be impaired.

Waste electrical and electronic equipment (WEEE) must be collected separately!

LONGO LPC-2 complies to the following standards:

EMC: IEC/EN 61000-6-2, IEC/EN 61000-6-4,
LVD: IEC 61010-1:2010 (3rd Edition), IEC 61010-2-201:2013 (1st Ed.)

MANUFACTURER:
SMARTEH d.o.o. Poljubinj 114 5220 Tolmin Slovenia

ABBREVIATIONS

Sorted by order of appearance in document:

dp: Delta P, pressure difference
VAV: Variable air volume
I/O: Input output
NTC: Negative temperature coefficient
LED: Light emitting diode
ERR: Error
PWR: Power
NO: Normally open
NC: Normally closed

DESCRIPTION

LPC-2.VV4 is a differential pressure module with various inputs and outputs integrated. Module is an optional choice to be used in ventilation control systems as VAV and similar.

The LPC-2.VV4 module is powered directly from the LPC-2 main unit. There are two LEDs. Green (PWR) indicates power supply presence, and red (ERR) indicates LPC-2.VV4 module error.

FEATURES

Figure 1: LPC-2.VV4 module

Table 1: Features

Powered from LPC-2 main unit
DeltaP measurement: 0 .. 500 Pa
3 x Voltage analog inputs: 0 .. 10 V
1 x NTC 10k input
1 x NTC 10k / voltage analog input: 0 .. 10 V, jumper selectable
8 x Digital inputs
1 x Voltage analog output: 0 .. 10 V
2 x Relay outputs, NO
2 x Relay outputs, NO / NC, jumper selectable
Standard DIN EN50022-35 rail mounting

INSTALLATION

Connection scheme

Figure 2: Connection scheme example

Figure 3: Connection scheme

NOTE: Special care must be taken in case of usage inductive character loads, e.g. contactors, solenoids, or loads that draw high inrush currents, e.g. capacitive character load, incandescent lamps. Inductive character loads cause over-voltage spikes at output relay contacts when they are switched off. The use of appropriate suppression circuits is advised.

Loads that draw high inrush currents may cause the relay output to be temporarily overloaded with the current above its allowed limits, which may damage the output, even though that steady-state current is within the allowed limits. For that type of load, the use of an appropriate inrush current limiter is advised.

Inductive or capacitive loads influence the relay contacts by shortening their working life period or can even permanently melt contacts together. Consider using another type of digital output e.g. triac.

Mounting instructions

Figure 4: Housing dimensions

Dimensions in millimeters.

****EXTERNAL SWITCH OR CIRCUIT-BREAKER AND EXTERNAL OVERCURRENT PROTECTION: The unit is allowed to be connected to installation with over current protection that has nominal value of 16 A or less.

RECOMMENDATION ON SWITCH OR CIRCUIT-BREAKER PROTECTION: There should be two poles main switch in the installation in order to switch off the unit. The switch should meet the requirements of standard IEC60947 and have a nominal value at least 6 A. The switch or circuit-breaker should be within easy reach of the operator. It should be marked as the disconnecting device for the equipment.

All connections, module attachments and assembling must be done while module is not connected to the main power supply.

The modules must be installed in enclosure with no openings. Enclosure must provide electrical and fire protection The shall withstand dynamic test with 500 g steel sphere from distance is 1.3 m and also static test 30 N. When installed in enclosure, only authorized person can have a key to open it.

Mounting instructions:

Switch OFF main power supply.
Mount LPC-2.VV4 module to the provided place inside an electrical panel (DIN EN50022-35 rail mounting).
Mount other modules. Mount each module to the DIN rail first, then attach modules together through K1 and K2 connectors.
Connect wires to the connectors according to the connection scheme. Recommended/Highest tightening torque is 0.5 / 0.6 Nm (4.42/5.31 lbf in)
Connect power supply wires to the connector according to the connection scheme. Recommended/Highest tightening torque is 0.5 / 0.6 Nm (4.42/5.31 lbf in)
Switch ON main power supply.
Power (PWR) green LED should switch on. Red LED (ERR) should switch off.

Dismount in reverse order. For mounting/dismounting modules to/from DIN rail a free space of at least one module must be left on the DIN rail. A disconnect device shall be incorporated in the field wiring.

NOTE: Signal wires must be installed separately from power and high voltage wires in accordance with general industry electrical installation standard.

Figure 5: Minimum clearances

The clearances must be considered before module mounting.

Module labeling

Figure 6: Label

Label (sample):

Label description:

XXX-N.ZZZ – full product name.
◦ XXX-N – Product family
◦ ZZZ – product
P/N: AAABBBCCDDDEEE – part number.
▪ AAA – general code for product family,
▪ BBB – short product name,
▪ CCDDD – sequence code,
• CC – year of code opening,
• DDD – derivation code,
▪ EEE – version code (reserved for future HW and/or SW firmware upgrades).
S/N: SSS-RR-YYXXXXXXXXX – serial number.
◦ SSS – short product name,
◦ RR – user code (test procedure, e.g. Smarteh person xxx),
◦ YY – year,
◦ XXXXXXXXX – current stack number.
D/C: WW/YY – date code.
• WW – week and
• YY – year of production.