User manual - ATR121/141 -
7
4
Hardware features
Analogue
inputs
An1
. Configurable via
software.
Thermocouple
type
:
K, S, R, J. Automatic
compensation of cold
junction from 0°C to
50°C.
Thermoresistance
:
PT100, PT500, PT1000,
Ni100, PTC1K, NTC10K
(β 3435K).
Linear
: 0-10V,
0-20 or 4-20mA, 0-40mV
Potentiometers
:
6KΩ, 150KΩ,
Tolerance (25°C)
+/-0.5 % ± 1 digit (full
scale) for thermocouple
input, thermo-
resistance and V/mA.
Cold junction accuracy
0.2°C/°C
Impedance
:
0-10V
: Ri>110KΩ
0-20mA
: Ri<5Ω
4-20mA
: Ri<5Ω
Relay
outputs
2
relays (ATR121/141-AD-
A-B-C)
1
relay (ATR121/141-ADT)
Configurable as
command and/or alarm
output
Contacts:
Q1
: 8A-250V~ (10A mod.
AD and ADT)
for resistive loads
Q2
: 5A-250V~
for resistive loads
SSR
output
1 SSR Configurable as
command output and/or
alarm output.
Mod. ATR121/141 A-B-C
• 8Vdc/20mA
Mod. ATR121/141 AD - ADT
• 15Vdc/30mA (if 12Vac)
• 30Vdc/30mA (if 24Vac)
• If DC supply is used,
output voltage is
equal to supply
voltage with max
30mA.
Summary of Contents for ATR 121
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