ABB XT7, Руководство по эксплуатации и обслуживанию

Страница: 182 / 193

ABB | SACE Tmax XT
180 | © 2020 ABB | 1SDH001821A1002 - ECN000135670 External electronic accessories | 13 - Ekip Signalling 3T
13 - Ekip Signalling 3T
Ekip Signalling 3T is a signaling accessory which enables the connection of:
• three analog inputs for PT100/PT1000 temperature sensors (2 wires): I42, I43, I44
• an analog input for 4-20mA current loop: I41
The measurements supplied by the module can be associated with different control threshold, useful for
configuring alarm signals, states and programmable commands.
Models
Ekip Touch can be configured with two different 3T modules: Ekip Signalling 3T-1 and Ekip Signalling 3T-2 .
NOTE:
if different indications are not given, the information in the next chapter is valid for
both models; on the second module the inputs are called I51 (lopp 4-20mA), I52, I53,
I54 (PT100/PT1000)
The two modules can be installed at the same time on the same circuit-breaker so as to extend the
opportunities for measuring and monitoring the installation.
IMPORTANT: each circuit-breaker can only be fitted with one module per type.
Configuration with two modules of the same model is not allowed (example: two
Ekip Signalling 3T-1 modules)
Connections
For references about the connection and terminals, please consult document 1SDM000002A1001
To connect the module to Ekip Touch, please consult document
1SDH001000r0527
.
For PT100/PT1000 sensors, use insulated cables for resistance thermometers such as PENTRONIC TEC/
SITW-24F (Type TX) or similar. Maximum length 3 meters.
For the 4-20mA Current Loop sensor, use suitable cables up to 3 meters in length compatible with the
workplace in which the 4-20mA current sensor is used.
IMPORTANT: the inputs are not insulated: regardless of plant voltage, the customer
must ensure there is insulation between each input and between the inputs and
power supply of the Ekip Supply module on the basis of the customer's own application
and network.
For applications in low voltage installations ABB suggests use of the external probe
PT1000 3mt, is equippped with a nut and screw for use on busbars and is compatible
with the dielectric withstand and insulation levels established by standard IEC 60947-
2 (Ui= 1000 V, Uimp= 12 kV).
Power supply
Ekip Signalling 3T is supplied directly by the Ekip Supply module to which it is connected.
NOTE:
communication between Ekip Touch and the module is interrupted in the absence of
auxiliary power supply
Input The module enables the following quantities to be measured
Input Measurement Range Resolution Accuracy (1)
PT100/PT1000 Temperature -50 ÷ 250 °C
(2)
0,01 °C ± 1 °C
4-20mA current loop DC current 0 ÷ 100 %
(3)
0.1 % ± 0,5 %
(4)
(1)
accuracy values refer to 3T module without sensors. For complete accuracy, consider the characteristics of
the sensors and cabling used; accuracy increases by 0.5°C with the ABB sensor
(2)
with ABB PT1000 sensor, the range is -25 ÷ 150°C
(3)
the measurement is expressed as a percentage, where: 0% = 4 mA and 100% = 20 mA
(4)
accuracy values refer to full scale: 0.5%= 0.1 mA