TEXA TX-i40 - Page 26

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Part Meaning Function
7 Dry contact digital input IN6
8 Analogue inputs power supply 4-20 mA (12 VDC, max. 120 mA)
9 Reference (GND) for analogue inputs, digital inputs and analogue outputs
10 Analogue output AO2 (0-10 V/ PWM)
11 Reference (GND) for analogue inputs, digital inputs, analogue outputs and INTRABUS
powered port
12 Analogue input IN10 (DI/NTC) Low pressure switch
13 Analogue input IN9 (DI/NTC) High pressure switch
14 Dry contact digital input IN8 (FAST) Condensing fan
stepping pressure switch
(outdoor versions)
15 Dry contact digital input IN7 (FAST) Sequencing communication
protocol reception
16 Reference (GND) for analogue inputs, digital inputs and analogue outputs Sequencing communication
protocol reference
17 Ratiometric analogue inputs power supply (5 VDC, max. 40 mA)
18 Open collector digital output OC1 (12 V, max. 40 mA) Sequencing communication
protocol transmission
The following table illustrates the meaning of CONNECTOR 4:
Part Meaning Function
1 RS-485 MODBUS port: reference (GND) [G] Modbus protocol slave,
congurable,forsupervision
and device programming use
2 RS-485 MODBUS port: - [B-]
3 RS-485 MODBUS port: + [A+]
The following table illustrates the meaning of CONNECTOR 5:
Part Meaning Function
1 Reference (GND) for display power and INTRABUS powered port [G] IB master communication
protocol for communicating
with display
2 INTRABUS powered port signal [IB]
3 Display power supply [VS]
ENG