XS0-J6

Air terminal units control the volume flow in a closed loop, which means: measurement – comparison – adjustment.
The volume flow rate is obtained by measuring a differential pressure. This is done with a differential pressure sensor. The integrated differential pressure transducer converts the differential pressure into a voltage signal. The actual volume flow value is available as a data point. Due to the factory adjustment, 100% always equals the nominal volume flow rate (q_vNom).
The volume flow setpoint value is specified by a higher-level controller (e.g. room temperature controller, air quality controller, central BMS). Variable volume flow control can be set between q_vmin and q_vmax. It is possible to override the room temperature control by forced switching, e.g. for a shut-off
The controller compares the differential pressure setpoint value to the actual value and controls the actuator accordingly if there is a difference.

• TVE

Compact controllers for VAV terminal units

Compact controller TR0VM-024T-05I-DS10-MB with RJ12 socket

Interface configuration of the control component

The communication interface of the control component is preset at the factory for use with the X-AIRCONTROL zone module Modbus. Only the Modbus address must be set by the customer, depending on the use in the supply air and extract air. For other applications, data transmission speed and format must be adapted on site according to the network environment.

* It is not possible to use the analogue interface in combination with the RJ12 connection socket used with the XS0-J6 variant. Therefore, the configuration register (interface mode) must not be changed on site. To use an analogue interface, the XS0 variant is used.

Communication interface Modbus RTU (operating mode M)

* Factory setting: Modbus address 1

R = register readable

R,W = register readable and writable

RAM = register value volatile

EEPROM = register value not volatile, but permanently stored (maximum 1 million write operations)

Note:

All registers from register number 100 onwards with storage in the EEPROM are not designed for cyclical write access, e.g. by the building management system. Cyclic write operations are only permitted on registers with storage in RAM.

Detailed information on register 122 (communication interface setpoint/actual value - interface mode)

Note:

For the control components XM0-J6 and XS0-J6, only register value 2 is useful, as analogue input and analogue feedback signal are not available on the RJ12 connection socket.

Detailed information on register 568 (Modbus communication parameters)

** Factory setting: Modbus communication parameters

Note on the type of static transducer used

• Mounting position any
• Zero point adjustment not required

After installation, wiring and connection of the supply voltage

• Set the Modbus communication parameters via the integrated display menu, then the air terminal unit is ready for operation
• Setpoint specification via Modbus register from X-AIRCONTROL zone module
• Remove terminal cover of the control component only for wiring

Observe volume flow control ranges

• TVE: 4 - 100 % of q_vnom
• TVE-Q: 10 - 100 % of q_vnom
• In particular, do not fall below the values for the minimum volume flow of the control unit

Display functions

• Actual volume flow rate (unit optionally m³/h, l/s, cfm)
• 3-character display with positional notation
• Status and error display for various operating states, including display of activated override control and diagnosis function

Parameter setting

• Adjustment option for the unit of the volume flow rate display m³/h, l/s, cfm
• Adjustment option for the operating range q_vmin, q_vmax
• Selection of interface configuration Modbus or analogue including signal voltage range 0 - 10 V or 2 - 10 V DC
• For the variant with RJ12 connection socket, only the Modbus interface configuration is suitable
• Adjustment option for Modbus communication settings (address, baud rate, stop bits, parity)

Diagnostic functions

• Activation of a test run
• Activation of override controls Open, Closed, q_vmin, q_vmax, motor stop (note prioritisation)
• Display of the voltage value on the analogue input

Use and description of the display

Description of status LEDs and error messages

LED flashing signal	Status	Display
	no power supply connected
	Service tool plugged in. On-site network connection deactivated. Forced controls from the service tool have priority
	Undervoltage detected. Supply voltage outside the tolerance range. Control function not guaranteed
	TROX service technicians provide information. Incomplete parameterisation was detected during power-on/reset *
	Drive overload detected (block) *
	Synchronisation drive after Power Up *
	Test mode enabled *
	Overpressure sensor (Overpressure) *
	Setpoint or forced control position not yet reached (display changes between e.g. Hi = high and actual value) *
	Forced control position reached (display changes between e.g. Hi = High and actual value) *
	Offset: Is signalled as long as the drive does not rotate to readjust the setpoint value *

Notes:

1. The signal spans 2 seconds. 1 = LED is illuminated, 0 = LED is not illuminated
2. For service tool plugged in (display: Pc) and undervoltage detected (display: Lou), no special flashing signal appears on the LED button. Instead, one of the operating states marked with an asterisk (*) is displayed.