102
ENG
µchiller +0300053EN rel. 2.2 - 14.12.2021
Technical speci cations
9. TECHNICAL SPECIFICATIONS
Model UCHBP* (panel models) UCHBD* (DIN rail models)
Physical speci cations
Dimensions See fi gures See fi gures
Case Polycarbonate Polycarbonate
Assembly panel DIN rail
Ball pressure test temperature 125°C 125°C
Ingress protection IP20 (rear) - IP65 (front) IP00
Front cleaning Use soft, non-abrasive cloth and neutral detergent
or water
-
Environmental conditions
Storage conditions -40T85°C, <90 % RH non-condensing -40T85°C, <90 % RH non-condensing
Operating conditions -20T60°C, <90 % RH non-condensing -20T60°C, <90 % RH non-condensing
Electrical speci cations
Rated power supply 24 Vac/dc (SELV or PELV power supply, Class 2) 24 Vac/dc (SELV or PELV power supply, Class 2)
Operating power supply voltage 24 Vac/dc, +10% -15% 24 Vac/dc, +10% -15%
Input frequency (AC) 50/60 Hz 50/60 Hz
Maximum current draw 600 mA rms DIN without ExV valve driver: 600 mArms
DIN with ExV valve driver: 1.25 Arms
Absorbed power for transformer sizing 15 VA Models without valve driver: 15 VA
Models with valve driver: 30 VA
Clock precision: ± 50 ppm; min time maintenance after
power off : 72 h
precision: ± 50 ppm; min time maintenance after
power off : 72 h
Software class and structure A A
Pollution degree 3 3
Class of protection against electric shock To be incorporated in class I or II appliances To be incorporated in class I or II appliances
Type of action and disconnection 1.C 1.C
Rated impulse voltage relay outputs: 4 kV; 24 V input: 0.5 kV relay outputs: 4 kV; 24 V input: 0.5 kV
Surge immunity category relay outputs: III; input 24V: II relay outputs: III; input 24V: II
Control device construction Device to be incorporated Device to be incorporated
Terminal block Plug-in male-female. Wire sizes: see the connector
table
Plug-in male-female. Wire sizes: see the connec-
tor table
Purpose of the controller Electrical operating control Electrical operating control
User interface
Buzzer integrato not included on the controller, built into the
user terminal
Display LED 2 rows, decimal point, and multi-function icons LED 2 rows, decimal point, and multi-function icons
Connectivity
NFC Max distance 10mm, variable according
to the mobile device used
Max distance 10mm, variable according
to the mobile device used
Bluetooth Low Energy Max distance 10m, variable according
to the mobile device used
Max distance 10m, variable according
to the mobile device used
BMS serial interface Modbus over RS485, not opto-isolated Modbus over RS485, not opto-isolated
FieldBUS serial interface Modbus over RS485, not opto-isolated Modbus over RS485, not opto-isolated
HMI interface Modbus over RS485, not opto-isolated Modbus over RS485, not opto-isolated
Analogue inputs (Lmax=10m)
J2 S1, S2, S3: NTC
S5: 0-5V ratiometric / 4-20 mA / NTC
NTC: resolution 0.1 °C; 10Kohm @ 25 °C, error:±1°C in
the range -50T50°C, ±3°C in the range 50T90°C;
0-5 V ratiometric: error 2% fs, typical 1%;
4-20mA: error 5% fs, typical 1%
0-10 V: error 2% fs, typical 1%
NTC: resolution 0.1 °C; 10Kohm @ 25 °C, er-
ror:±1°C in the range -50T50°C, ±3°C
in the range 50T90°C;
0-5 V ratiometric: error 2% fs, typical 1%;
4-20mA: error 5% fs, typical 1%
0-10 V: error 2% fs, typical 1%
J3 S4: 0-5 V ratiometric / 4-20 mA / NTC
S6: 0-5 V ratiometric /
0-10V / 4-20 mA / NTC
J9 S7: NTC (DIN version only) - NTC: resolution 0.1 °C; 10Kohm @ 25 °C, er-
ror:±1°C in the range -50T50°C, ±3°C in the
range 50T90°C;
Digital inputs (Lmax=10m)
Model UCHBP* (panel models) UCHBD* (DIN rail models)
J2 ID1(*) Voltage-free contact, not optically-isolated,
typical closing current 6 mA, voltage with contact
open 13 V, max contact resistance 50Ω
(*) Fast digital input: 0-2 kHz; error 2% fs
J2 ID2
J3 ID3(*), ID4, ID5,
J9 ID6 - avail. only on DIN vers
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