Trox Technik Compact XM0, Инструкции по установке и вводу в эксплуатацию

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3.4 Operating modes
The operating mode of the control component (ana-
logue 0(2) – 10 V or Modbus) is set at the factory and
specified by the order code. The operating mode can be
changed on the control component itself or on Modbus
register 122.
Setpoint and actual value signals
Setpoint and actual values are transmitted via the
Modbus communication interface or by an analogue
voltage signal.
Oper-
ating
mode
Signal Order
code
Menu
configu-
ration
(mode)
Setpoint
value
Actual
value
Analogue Analogue 0 – 10 V V or F CA0
Analogue Analogue 2 – 10 V V or F CA2
Modbus Register
0
Register
6 or 7
or
Analogue
2-10 VDC
M CB2
V = variable operation
F = constant value operation
A special configuration of the Modbus register (register
122) interface operation enables the configuration of a
mixture of Modbus and analogue operation. In this way,
when controlled locally with an analogue signal from a
higher-level building management system (central
BMS), additional operating values can be transmitted
via the Modbus interface e. g. Read out the actual
volume flow rate value and damper position or even
trigger central override controls Ä ‘Detailed information
on register 122 (communication interface setpoint/actual
value - Interface Mode)’ on page 32 .
3.4.1 Operation with constant volume flow
rate setpoint value
3.4.1.1 Operation with a fixed setpoint value
Fig. 5: Constant control
1 Compact controller
2 Volume flow rate setpoint value set at the factory
(q
vmin
)
3 Volume flow rate actual value as analogue voltage
signal or digitally via Modbus e. g. to central BMS or
slave controller
In the simplest case, the control component is operated
with a constant volume flow rate setpoint value. The
constant setpoint value (q
vconst
= q
vmin
) is already set by
the factory default. Adaptation of the factory-set con-
stant values,
Ä
8.5 ‘Setting of the control component’
on page 28 .
A control signal at terminal Y must not be switched in
this case.
3.4.1.2 Operation with two fixed setpoint values
(min./max. switching)
Fig. 6: Min./max. switching
1 Compact controller
2 Factory-set volume flow rate setpoint values (q
vmin
and q
vmax
)
3 Volt-free switch contact for switching between q
vmin
and q
vmax
4 Volume flow rate actual value as analogue voltage
signal or digitally via Modbus e. g. to the central
BMS
Structure and functional description
Operating modes > Operation with constant volume flow rate setpo...
Control component Compact XM0 • XS0 for VAV terminal unit TVE 12