ZIEHL Temperature-Relay Type TR122D
Product description
Switching-Relays Typs TR 122 D(A) monitor the input-signal for 2 limits. The TR 122 DA transduces the measured temperature/resistance to a proportional DC-current.
Applications of the TR 122 D(A) are:
- Monitoring of temperatures with pre-alarm and alarm in machines and plants
- Controlling of temperatures e.g. for heated sample gas lines or refrigerating plants
- Transducer for Pt 100 (RTD) and resistance (TR 122 DA only)
Overview of Functions
- 1 input sensor, Pt 100 (RTD) or resistance
- Measuring ranges -199...850°C / 0...850 Resolution 0,1 °C / within the ranges -19,9...99,9 °C / 0-99,9
- 2 relay outputs (each 1 change-over contact)
- 1 analog output 0/4-20 mA scaleable (TR 122 DA only, not potentially separated from the inputs)
- Universal power supply AC/DC 24-240 V
- Storage and display of the measured MIN- and MAX-values
Technical data
Power Supply
Rated supply voltage Us
AC/DC 24 – 240 V, 0 / 50 / 60 Hz < 3 W < 5 VA
Tolerance
DC 20,4 - 297 V,
AC 20 - 264 V
Output
Relay output
2 x 1 change-over contact (CO)
Switching voltage
max. AC 415 V
Switching current
max. 5 A
Switching capacity
max. 1250 VA (ohmic load)
max. 48 W at DC 24 V
Reduction factor for cos ϕ 0,7
3-wire, max. resistance 3 x 25 Ω
Nominal operational current Ie
AC15
Ie = 1 A ..... Ue = 400 V
Ie = 2 A ..... Ue = 250 V
DC13
Ie = 2 A ..... Ue = 24 V
Ie = 0,2A ..... Ue = 125 V
Ie = 0,1A ..... Ue = 250 V
Recommended fuses for contacts
T 3,15 A (gL)
Expected life mechanical
1 x 107 switching cycles
Expected life electrical
1 x 105 switching cycles at AC 250 V / 5 A
2 x 105 switching cycles at AC 250 V / 3 A
6 x 105 switching cycles at AC 250 V / 1 A
Test conditions (EN 50178 / EN 60 947)
Rated impulse voltage
4000 V
Contamination level
3
Rated insulation voltage Ui
250 V
On-time
100 %
Rated ambient temperature range
-20 °C ... +60 °C (EN 60068-2-1 dry heat)
EMV – interference resistance
EN 61000-6-2
EMV – emitted interference
Vibration resistance EN 60068-2-6
Sensor connection
Measuring time tM
< 2,5 s
< 5 s in case of changes > 5 K or < 1 K
< 15 s in case of sensor error
Tolerance
±0,3 % of measured value ±0,5 K
Sensor current
≤0,8 mA
Temperature drift
<0,04°C/K
Analog output
Current output 0/4-20 mA
max. 500 Ώ, Precision 0,3 % of Full-Scale
Temperature drift
< 0,015 %/K
Error from impedance
(250Ώ - load)/250Ώ * 0,3 % of current
At error short circuit Er1
output 0 mA
Other errors
output 22 mA
Housing
Design
S12
Dimensions (height x width x depth)
82 x 42 x 121 mm
Wire connection, one wire
12-pole, each 2 x 1,5 mm2
Protection class housing
IP 40
Protection class terminal
IP 20
Mounting position
any
Installation
Snap mounting on DIN-rail 35 mm
According to EN 60715 or screws M4
Weight
app. 250 g