User manual - ATR121 - 11
4
Hardware features
Analogue
inputs
AN1. Configurable
via software.
Thermocouple
type: K, S, R, J.
Thermoresistan-
ce: PT100, PT500,
PT1000, Ni100,
PTC1K, NTC10K (β
3435K).
Linear: 0-10V,
0-20 or 4-20mA,
0-40mV
Potentiometers:
6KΩ, 150KΩ,
Acuracy: Ris. 16bit.
For Thermocouple:
@25°C
±0,5% (full scale) or ± 1 digit,
automatic compensation
of cold junction from 0°C to
50°C.
For linear input: 0/4..20mA:
30000 points, 0..10V: 40000
points.
For potentiometers: 40000
points
Impedance:
0-10V: Ri>110KΩ
0-20mA: Ri<5Ω
4-20mA: Ri<5Ω
Relay
outputs
2 relays (ATR121-
AD-B)
Configurable as
command and/or
alarm output
Contacts:
Q1: 8A-250V~
for resistive loads
Q2: 5A-250V~
for resistive loads
SSR
output
1 SSR Configurable
as command
output and/or
alarm output.
For ATR121-B
• 8Vdc/20mA
For ATR121-AD
• 15Vdc/30mA (if 12Vac)
• 30Vdc/30mA (if 24Vac)
• If DC supply is used,
output voltage is equal
to supply voltage with
max 30mA.