80209C_MHW_850-1650-1850_01-2020_ITA_pag. 274
INPUTS
INGRESSI PRINCIPALE
ED AUSILIARIO
(Main, Aux1, Aux2)
Sensor type • Thermocouples, RTD (PT100, JPT100), IR pyrometers with type K
output, 4…20mA, 0…20mA, 10V, 5V, 1V, 60mV, potentiometer
• Reading accuracy: ±0.1% of value read
This Gefran controller, when subjected to the necessary calibration
operations in the field, is suitable for use in Nadcap applications
for any class of oven, from 1 to 6, according to specification
AMS2750E, paragraph 3.3.1.
Thermocouple
(only Main and Aux1)
• Types: J, K, R, S, T, C, D, B, E, L, L-GOST, U, G, N,Pt20Rh-
Pt40Rh Custom linearisation available
• Linearisation accuracy: according to standard ITS90 polynomes;
refer to user manual for details
• Cold joint accuracy: < ± 1°C at 25°C ambient temperature
• Cold joint compensation: greater than 40:1, rejection at changes
in room temperature exceeding 25°C
• Diagnostics: Indication of faulty probe and out of scale
RTD input
(Pt100 and JPt100)
• Types: Pt100, JPt100. Custom linearisation available
• Calibration accuracy: < ±0,1% of the value read in °C ± 0,4°C
• Linearisation accuracy: <±0,062°C
• Thermal shift: < (±0.002% of read value/°C, starting from 25°C
room temperature) ± 0.1°C
• Diagnostics: Indication of faulty probe and out of scale
Linear DC input • Tipi : 0...60 mV, 0…20mA, 4…20mA, 0…1V, 0…5V, 0…10V,
0…2.4V high impedance, 0…1.2V high impedance
• Input impedance :
0…60mV, 0…1V, 0…1.2V, 0…2.4V : > 100 MΩ
0…5V, 0…10V : > 400 kΩ
0…20mA, 4…20mA : 50 Ω
• Linearisation: linear or custom
• Calibration accuracy: < 0,1% out of scale
• Thermal shift: <±0.003% full scale/°C, starting from 25°C room
temperature
Sampling time 60 ms or 120 ms, selectable
Digital filter 0,0...20,0 s configurable
Rejection to network disturbance
(48-62Hz)
Rejection to differential mode: >80 dB
Rejection to common mode: >150 dB
Temperature unit of measure Grade C / F, selectable on the keypad
Reading interval Type: linear
Scale: -1999...9999, settable decimal point
Insulation Functional insulation between main and auxiliary inputs
Type Isolato tramite trasformatore esterno
Number: 2 max
Maximum load: x / 50 mA AC
Network frequency: 50/60 Hz
Input impedance (Ri): 10 Ω
TA
(ammeter) input
Type Isolated via external transformer
Number: 2 max
Max. capacity: x / 50 mA AC
Line frequency: 50/60 Hz
Input impedance (Ri): 10 Ω
Accuracy ±2% f.s. ±1 digit @25 °C
DIGITAL INPUTS
Numero 5 max
Type voltage-free contact, or
NPN 24 V - 4,5 mA, o
PNP 12/24 V - max 3,6 mA
For detail see electrical connections
Isolation 250 V
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