|
|
caffè! |
leva! |
ristretto! |
|
|
Compatible hardware |
arturo,
faustino (specs below for arturo) |
ito |
Pollin's
avr-net-io and easy-kit 2 (specs below for easy kit 2) |
| Control
functions |
2 PID, 2 pumps, 2 valves |
2 PID, 1 pump, 1 valve |
PID |
|
Dimensions |
90x90mm |
65x56mm |
90x90mm |
|
Typical installation type |
Internal |
Internal |
Internal |
|
Microcontroller(s) |
ATMega1284 |
ATMega1284 +
Xtensa LX106 |
ATMega1284 |
|
Display |
Optional
(OLED graphics display or 3x16 LCD) |
Optional
(OLED graphics display) |
Optional
(OLED graphics display or 3x16 LCD) |
|
On-board power supply |
No |
Optional
(100-240VAC/50-60hz) |
No |
|
Solid state relays (max) |
Up to 8 for:
Pump
Valve
PID 1
PID 2
Refill pump/valve
Valve wand 1
Valve wand 2
Grinder |
Up to 4 for:
Pump
Valve
PID 1
PID 2 |
Up to 3 for:
PID 1
PID 2
Grinder |
|
On-board solid state relays |
0 |
2 (pump, valve),
max. 240V/1A |
0 |
|
Real time clock with battery |
Yes |
- |
Yes |
|
Flow meter input |
1 |
1 |
1 |
|
Pressure sensor input5 |
1 |
1 |
1 |
|
Water tank sensor |
Switch or capacitive SAECO sensor (P14701A1Z) |
Switch or capacitive SAECO sensor (P14701A1Z) |
Switch or capacitive SAECO sensor (P14701A1Z) |
|
Max. ambient temperature |
70ºC |
|
70ºC |
|
Input elements |
Six buttons on display module and/or temperature selector toggle
switch |
Rotary encoder with push-button
OR two buttons on display module |
Six buttons on display module and/or temperature selector toggle
switch |
| Signaling |
White LED for original
boiler lamp
(dimmable) |
White LED for original
boiler lamp
(dimmable) |
White LED for original
boiler lamp
(dimmable) |
|
LED outputs |
10 LED, dimmable |
2 LED, dimmable +
2 on-board LED (power and Wifi state) |
5 LED, dimmable |
|
LED function |
Configurable |
Configurable |
Configurable |
|
Logic-level contact inputs for user-assigned functions |
14 |
0 - 41 |
8 |
Mains voltage sense inputs
(zero cross detecion) |
- |
1
(opto-isolated) |
- |
|
Temperature sensor inputs |
8
(Simultaneous use: 5) |
2
(Simultaneous use: 2) |
6
(Simultaneous use: 5) |
Digital temperature sensor inputs
(TSic 306 TO92) |
5 |
2 |
5 |
|
Analog inputs |
4 x 24bit + 3 x 10bit |
2 x 10bit |
3 x 10bit |
|
Supported analog sensors |
Pressure sensor,
Paddle6,
2 x Pt100 or Pt1000,
4 x Thermocouple "Type K",
KTY (temperature sensor) |
Pressure sensor,
Paddle6 |
Pressure sensor,
KTY (temperature sensor) |
|
1 x Thermocouple "Type K" (with AFE16/24 analog
frontend) |
|
Measurement resolution |
0.0625ºC (Pt1000) or
0.1ºC (TSic) |
0.1ºC (TSic) |
0.1ºC (TSic) |
|
Measurement range (max) |
150ºC |
150ºC |
150ºC |
|
Calibrated sensor | Measurement error (max) |
Yes
| max. 0.3ºC at 90ºC (TSIC) |
Yes
| max. 0.3ºC at 90ºC (TSIC) |
Yes
| max. 0.3ºC at 90ºC (TSIC) |
| Buzzer |
Yes |
Yes |
Yes |
|
Safe USB (galvanic isolation) |
Yes |
No USB port |
Yes |
|
Vibration-resistant connectors |
Yes |
Yes |
Yes |
|
PID temperature control |
|
|
Cycle time |
1s |
1s |
1s |
|
Internal resolution |
0.0625ºC |
0.0625ºC |
0.0625ºC |
|
Number of PID controllers |
2 Channels |
2 Channels |
2 Channels |
|
Steam control |
Thermostat or PID
(setpoint controlled by logic-level steam switch; does not
require extra relay) |
Thermostat or second PID channel
(requires extra relay for second PID channel) |
Thermostat or second PID channel
(requires extra relay for second PID channel) |
|
Context-specific PID configuration for warm-up, idle phase, shots |
Yes |
Yes |
Yes |
|
Anti-Windup overshoot reduction |
Yes |
Yes |
Yes |
|
Output limiting |
Yes |
Yes |
Yes |
|
Integral freeze |
Yes |
Yes |
Yes |
|
Feed-Foward control |
Yes
(via flow meter) |
Yes
(via flow meter) |
Yes
(via flow meter) |
Ramp & Soak (programmable
output | setpoint curves) |
Yes
| Yes |
Yes
| Yes |
Yes
| Yes |
|
Combine physical sensors into virtual sensor |
Yes |
Yes |
Yes |
|
Autotuning |
Yes
(configurable) |
Yes
(configurable) |
Yes
(configurable) |
|
ECO mode | Standby |
Yes
| Yes
(configurable) |
Yes
| Yes
(configurable) |
Yes
| Yes
(configurable) |
Sensor calibration via
offset correction | gain correction |
Yes
| Yes |
Yes
| Yes |
Yes
| Yes |
|
Grouphead offset correction |
Yes |
Yes |
Yes |
|
Digital filters |
3
(Sensor, D component of PID and PID output) |
3
(Sensor, D component of PID and PID output) |
3
(Sensor, D component of PID and PID output) |
|
Pump and valve control |
|
|
Firmware-controlled valves |
4 |
1 |
- |
|
Pump power control |
Nearly stepless3
(Phase angle control) |
Nearly stepless3
(Phase angle control) |
- |
|
Pressure control loop with feedback from sensor |
Yes |
Yes |
- |
|
Pressure profiling (programmed pressure curves) |
Yes |
Yes |
- |
|
Power profiling (programmed pump power curves) |
Yes |
Yes |
- |
| Flow
tracking (lock flow rate) |
- |
Yes |
|
| Analog
paddle, absolute6 |
Yes |
Yes |
- |
|
Digital paddle, incremental |
- |
Yes
(Rotary encoder) |
- |
|
Preinfusion (firmware-controlled pressure) |
Yes |
Yes |
- |
|
On-off preinfusion, no pressure sensor required |
Yes |
Yes |
- |
|
Flow rate limiting at beginning of shots |
Yes |
Yes |
- |
|
Dosing by volume with flow meter |
Yes |
Yes |
- |
|
Dosing by time |
Yes |
Yes |
- |
Dosing by weight with scale
("gravimetric dosing") |
- |
Yes
(with Skale 2, Felicita Arc, Eureka Precisa) |
- |
|
Warm-up program |
Yes |
Yes |
- |
|
Grouphead flush program |
Yes |
Yes |
- |
|
Backflush program |
Yes |
Yes |
- |
|
Descale program |
Yes |
Yes |
- |
|
Special functions |
|
|
Shot timer (visual | acoustic) |
Yes
| Yes |
Yes
| Yes |
Yes
| Yes |
|
Grinder control (grind timer) |
Yes |
- |
Yes |
|
Limescale monitoring |
Yes |
Yes |
Yes |
|
Backflush reminder |
Yes |
Yes |
Yes |
| Water
filter monitor |
Yes |
Yes |
Yes |
|
Empty tank alarm |
Yes |
Yes |
Yes |
|
Timer function with weekday timer |
Yes |
Maybe later2 |
Yes |
|
Energy saving with configurable ECO mode |
Yes |
Yes |
Yes |
|
Shot logger (recording in non-volatile memory) |
Yes
(in on-board EEPROM) |
Maybe later4 |
- |
|
Automatic, dimmable grouphead illumination |
Yes |
Yes |
Yes |
|
Protective functions (limiting of pump run time, limiting of
heat-on time etc.) |
Yes |
Yes |
Some |
|
Interfaces |
USB, Bluetooth 2.0 |
Wifi, Bluetooth LE,
Serial7 |
USB |
|
Virtual LCD software |
Windows
Linux
(Mac OS X experimental) |
Windows
Linux
Mac OS X
Android |
Windows
Linux
(Mac OS X experimental) |
|
Status monitor software to view view plots, data, gauges |
Windows
Linux
(Mac OS X experimental) |
Windows
Linux
Mac OS X
Android |
Windows
Linux
(Mac OS X experimental) |
|
Documentation |
|
|
Installation guide and firmware manual |
ca. 235 pages |
ca. 305 pages |
ca. 140 pages |
| |
1:
Up to 4 pins (AUX and ADC headers) can be used to read contacts. In a
typical configuration (1 x TSic sensor + 1 x tank sensor +
1 x pressure sensor), one pin is free to be used as configurable
contact input
2: Will require internet access to obtain time from SNTP server
because ito has no clock chip.
3: Available resolution depends on the pump. ULKA E5 series
recommended, e.g. EP5.
4: In EPS8266 flash memory
5: leva! supports ratiometric sensors that work with 5V supply
voltage and have a range between 0-10bar and 0-40bar (min.
145psi, max. 580psi).
6: A lever-operated linear 10K potentiometer
7: ito's serial port is located at the AUX
header and can only be used for firmware updates. leva!
will not transmit live data over it because it uses the AUX port
for sensors. |
