EVCO EVFTFT818P7U Installer manual - Manual (Page 6)

EVCO S.p.A. EVFTFT818 | Installer manual ver. 2.1 | Code 144FTFT818E214
page 6 of 94
1 INTRODUCTION
1.1 Introduction
EVFTFT818 is a digital controller studied to manage temperature-controlled blast chillers, which can be mechanically
and aesthetically integrated into the unit.
The controller is fitted with:
- clock
- signal buzzer and alarm
- 6 analogue inputs (cabinet probe, “multipoint” needle probe with up to three sensors, evaporator probe and
condenser probe) for PTC/NTC probes
- 4 digital inputs (door micro switch, high pressure, low pressure and compressor circuit breaker protection)
- 1 PWM analogue output for management of the evaporator fan
- 8 digital outputs (electromechanical relays), 1 x 16 A res. @ 250 VAC for compressor management, 1 x 16 A
res. @ 250 VAC for management of needle probe heating, 6 x 8 A res. @ 250 VAC for management of
defrosting, evaporator fan, condenser fan, door heating elements, of a seventh utility that can be set for the
cabinet light or UV light and an eighth utility that can be configured for pump down valve or alarm output.
- RS-48 serial port with MODBUS communication protocol
- USB port (according to the model).
The device can manage both temperature-controlled and timed and hard and soft blast chilling and storage cycles and
deep freezing and storage cycles, with intensity management via the use of a PWM analogue output and phase cut
speed regulator for EVDFAN1 single phase fans.
Every operating cycle can be preceded by pre-cooling. The temperature-controlled cycles are also preceded by a test
for checking the correct connection of the needle probe, with "multipoint" probes management (up to three sensors).
The device is available in “split” execution (user interface + control module).
The user interface is behind a Plexiglas sheet and is made up from a 320 x 240 pixel colour TFT graphic display (3.5")
and 11 capacitive touch-keys; installation is envisioned on rear of panel with studs.
The control module is without cover and installation is envisioned on flat surface with spacers.
The "programs" function can be used to memorise some settings in a program and start an operating cycle with the
settings it has memorised.
Via the "HACCP" function, up to 9 events can be memorised for each of the 3 HACCP alarms (temperature-controlled
blast chilling or deep freezing not concluded within the maximum duration alarm, maximum temperature during
storage alarm and power cut during storage alarm); the critical value, date and time at which the alarm occurred and
the duration can be memorised for each HACCP alarm.
It is possible to connect the controller to the Parameters Manager set-up software system, to the monitoring and
surveillance system of the RICS plants, to the data recording device and to download the recorded data (via USB)
EVUSBREC01.
Some of them have an USB communication port; through this port it is possible to make the upload and the download
of the configuration parameters and of the programs and make the download of the information relative to the HACCP
alarms.
The following are indicated among the many other features:
- IP65 protection rating of the user interface
- memorisation of the defrosting interval
- management of temperature alarms
- compressor operating hours count
- "keyboard lock" function.