X-VALVE-MOD-KP-MD15-Q-J6

Modbus communication interface

X-AIRCONTROL - Modbus zone module

Small valve - perfect accessory for the actuator

X-VALVE-MOD-KP-MD15-Q-J6

For the secondary treatment of air, downstream of heating and cooling coils in water-side applications, in defined zones, offices and meeting rooms

Electronic actuator for the room air and extract air temperature control by means of pressure-independent valves in various water-based applications and automatic, pressure-independent flow control (hydraulic balancing)

Electronic actuator with Modbus interface
LED for indicating the operating status
DIP switches for setting the communication parameters
Display of actual values, setpoint values and status via Modbus
Automatic closing point detection and valve calibration
Modulating control of the control signal and hence of the valve position (0 - 100%), feedback via Modbus
Automatic valve anti block function prevents the spindle from blocking if the valve remains idle for a prolonged period of time
Automatic flushing
Flow characteristics of pressure-independent valves can be set via Modbus
Volume flow rates can be set via Modbus (hydraulic balancing)
Analogue inputs (can be configured) for two temperature sensors
Automatic leak detection based on the flow and return temperatures
Space-saving casing optimised for installation on an underfloor heating manifold

General information

Application

For the secondary treatment of air, downstream of heating and cooling coils in water-side applications of HVAC systems, in defined zones, offices and meeting rooms
Electronic actuator for RBQ/QTZ valves, used for the modulating control of room temperature and extract air temperature in various water-based applications
Small actuator for modulating control procedures in heating, ventilation and air conditioning systems

Special features

Communication and signalling via Modbus RTU
RJ12 connection for easy plug and play
Ideal for the TROX X-AIRCONTROL system
LED for indicating operating status and faults
DIP switches for setting bus parameters
Automatic detection of the closing point
Leak detection by means of flow and return temperature measurement
Choice of flow characteristics
Configuration of hydraulic balancing values
Automatic flushing
Valve anti block function
Maintenance-free

Interface

Digital communication interface (bus)

Modbus RTU for communication and signalling

Analogue interface

2 analogue inputs (e.g. for temperature sensors)

Variants

Electronic actuator suitable for 2-way and 3-way valves

Parts and characteristics

Electronic actuator for encased valves
Valve calibration for DN 10 – 32
Electrical connection with terminals or plug-in cables
Factory fitted cable with RJ12 socket for the connection to X-AIRCONTROL

Construction features

Valve connection with M30 × 1.5 thread
Electrical connection points with removable cover
2 casing cover variants (with 1 or 2 cable entry points)
Simple connection to the X-AIRCONTROL Modbus zone module with plug and play

Materials and surfaces

Casing top made of plastic, PC, UL 94 V-0, RAL 9003
Casing bottom made of plastic, PTB, UL 94 V-0, RAL 7035

Useful additions

X-AIR-ZMO-MOD Modbus zone module for room control

Description

Variants

Electronic actuator suitable for 2-way and 3-way valves

Construction features

Valve connection with M30 × 1.5 thread
Electrical connection points with removable cover
2 casing cover variants (with 1 or 2 cable entry points)
Simple connection to the X-AIRCONTROL Modbus zone module with plug and play

Materials and surfaces

Casing top made of plastic, PC, UL 94 V-0, RAL 9003
Casing bottom made of plastic, PTB, UL 94 V-0, RAL 7035

Interface

Digital communication interface (bus)

Modbus RTU for communication and signalling

Analogue interface

2 analogue inputs (e.g. for temperature sensors)

Technical information

Function, Specification text, Order code

Installation example: TROX X-VALVE Modbus (RTU) used with TROX DID and zone module X-AIR-ZMOMOD

① Water flow
② Water return
③ Small valve
④ Modbus (RTU) actuator for small valve
⑤ TROX DID604 active chilled beam
⑥ TROX Modbus (RTU) zone module X-AIR-ZMO-MOD for single room control

T₁ = optional analogue temperature sensor in the water return
T₂= optional analogue temperature sensor in the water flow

For the secondary treatment of air, downstream of heating and cooling coils in water-side applications of HVAC systems, in defined zones, offices and meeting rooms. Electronic actuator for RBQ/QTZ valves, used for the modulating control of room temperature and extract air temperature in various water-based applications.

Specification text

Small actuator with Modbus RTU interface (RS485) for the modulating control of zone-based secondary treatment devices in HVAC systems.

Special features

Communication and signalling via Modbus RTU
RJ12 connection for easy plug and play
Ideal for the TROX X-AIRCONTROL system
LED for indicating operating status and faults
DIP switches for setting bus parameters
Automatic detection of the closing point
Leak detection by means of flow and return temperature measurement
Choice of flow characteristics
Configuration of hydraulic balancing values
Automatic flushing
Valve anti block function
Maintenance-free

Interface/signalling

Modbus RTU interface (RS 485)

Electrical connection

RJ12 socket as standard, alternatively screw terminals
Can be connected to X-AIRCONTROL and an X-AIR-ZMO-MOD zone module simply by plug and play
2 universal inputs, e.g. for temperature measurement (flow and return temperatures)

Supply voltage

24 V AC/DC ±10 % with RJ12 connection
When used with X-AIRCONTROL, the power is supplied via the zone module

Water-side connection

Positive lock connection M30 × 1.5; DIN 13
For type RBQ/QTZ control valves

Factory condition

Electronic actuator
Factory fitted RJ12 connector for simple plug and play
Special cover with a second cable entry point
Factory fitted connecting cable for sensors
Product description

Dimensions

Height: 75 mm
Width: 48.5 mm
Depth: 86.5 mm

X-VALVE	–	MOD	–	KP-MD15-Q-J6
\|		\|		\|
1		2		3

1 Type
X-VALVE

2 Interface
ANA analogue
MP MP bus
MOD Modbus RTU

3 Type of actuator
For example
KP-MD15-Q-J6 for pressure-independent valves
KP-MD15-RZ-J6 for standard valves

Order example: X-VALVE-MOD-KP-MD15-Q-J6

Type	X-VALVE
Interface	MOD
Type of actuator	KP-MD15-Q-J6

Variants, Technical data, Product details

X-VALVE-MOD-KP-MD15 with open cover

1: X-VALVE-MOD casing
2: Terminal strip
3: 4-wire cable at RJ12 socket
4: DIP switches
5: Status LED, green / yellow / red
6: Terminal strip
7: Strain relief

X-VALVE-MOD-KP-MD15-Q-J6, electronic actuator for small valves

Order code	Part number	Type
X-VALVE-MOD-KP-MD15-Q-J6	A00000073472	KP-MD15-Q-J6

X-VALVE-MOD-KP-MD15-Q-J6, electronic actuator for small valves

Supply voltage (AC)	24 V AC ±10 %, 50/60 Hz
Supply voltage (DC)	24 V DC ±10 %
Power rating (AC)	3.8 VA
Power rating (DC)	1.9 W
Interface	RS485 Modbus RTU slave
Control input signal	Modbus RTU
Inputs/outputs	2 universal inputs or outputs (P1, P2) via Modbus, can be configured individually as: - binary input, volt-free, 500 Ω, 1 mA max.; 13 V DC - analogue input - output 0 – 10 V only P2
Voltage and communication connection	Factory fitted cable with RJ12 socket / terminals
Connection of inputs/outputs	Terminals up to 1.5 mm²
Display	LED for indicating operating status and faults; scale for valve stroke on the outside
Actuator noise	< 31 dB(A)
Actuator stroke	9 mm max.
Actuator force	150 N, nominal
Acceptable water temperature	0 °C – 120 °C
Ambient temperature	0 °C – 50 °C
Humidity	No condensation
Protection level	IP 54
IEC protection class	III according to EN 60730
Installation orientation	360°
Maintenance	Maintenance-free
Weight	Approx. 350 g

Installation and commissioning

Installation only in heating, ventilation and air conditioning systems indoors
Do not switch on the power supply until the actuator has been installed on the valve
Setting Modbus addresses with DIP switches 1 - 6
LED for indicating the operating status
Maintenance-free actuator

Removing the actuator

Let valve and actuator cool down
Set DIP switches 1 – 6 to OFF
LED blinking rapidly, green
Interrupt the supply voltage
Disconnect all electrical connections
Loosen the union nut
Remove the actuator from the valve

Setting Modbus addresses 1 - 63 with the DIP switches

Address	DIP 6 (bit 5)	DIP 5 (bit 4)	DIP 4 (bit 3)	DIP 3 (bit 2)	DIP 2 (bit 1)	DIP 1 (bit 0)
1	0	0	0	0	0	1
2	0	0	0	0	1	0
3	0	0	0	0	1	1
4	0	0	0	1	0	0
etc.
…
63	1	1	1	1	1	1

Note: After the addressing has been adjusted, an initialisation run is always carried out.

Communication interface Modbus RTU

Register	Who	Description	R/W
0	Setpoint value	0 – 10000 (0.0 – 100.0 %)	RW
1	Override control	0 = none 1 = open 2 = close 3 = minimum position 5 = maximum position
2	Command	0 = normal control operation 1 = initialisation 2 = test 3 = sync 4 = ErrReset 5 = BaudrateChange	R/W
5	Absolute position (mm)	in mm (* 10)	R
8	Flow temperature	in °C (* 10), actual flow temperature	R
107	Return temperature	in °C (* 10), actual return temperature	R
141	Temperature difference P1/P2	in K (*10), temperature difference between flow and return	R
125	Correction value P1	V (* 100); °C (* 10)	R/W
128	Correction value P2	V (* 100); °C (* 10)	R/W
145	Configuration of sources for differential temperature calculation	0 = flow and return temperatures: bus register value 1 = flow: P1; return: P2 2 = flow: P2; return: P1 3 = flow: P1; return: bus 4 = flow: P2; return: bus 5 = flow: bus; return: P1 6 = flow: bus; return: P2	R/W
105	Minimum stroke	0 – 10000 (0 – 100) (minimum stroke) (0 = default)	R/W
106	Maximum stroke	0 – 10000 (0 – 100) (maximum stroke) (10000 = default)	R/W
140	Hardware	0x00XX = MD15MOD-Q 0x01XX = MD50MOD 0x02XX = MD15MOD-RZ	R
100	Serial number 1	0 – 65535	R
101	Serial number 2	0 – 65535	R
102	Serial number 3	0 – 65535	R
103	Firmware version	0 – 65535	R
104	Operating state	0x0000: Normal, fault-free operation 0x0001 = fault, internal memory 0x0002 = fault, internal A/D conversion 0x0004 = valve calibration error 0x0008 = fault, internal motor 0x0010 = P1 limit exceeded 0x0020 = P2 limit exceeded 0x0100 = communication, test run/calibration in process	R
147	RS-485 baud rate	0 = default (38400, 8, N, 2) 1 = 9600 2 = 19200 3 = 38400 4 = 57600 5 = 115200	R/W
148	RS-485 stop bits	1; 2	R/W
149	RS-485 parity	0 = none 1 = even 2 = odd	R/W
407	Leakage warning	0 = none 1 = leak detected, (> 8 K temperature difference between flow and return over 6 hours)	R
3	Actuator type	201	R
6	Relative volume flow rate	0 – 10000 (0.0 – 100.0 %)	R
7	Actual volume flow rate	l/h	R
146	Selection of the current valve characteristic	0: linear 1: QTZ15/0.55 30 – 210 l/h 2: QTZ15/1.7 150 – 700 l/h 3: OTZ15-20/2.1 200 – 1300 l/h 4: QTZ20/3.1 250 – 1800 l/h 5: QTZ25/4.1 400 – 2500 l/h 6: QTZ32/8.4 600 – 4800 l/h 7: RBQ15/0.5 30 – 210 l/h 8: RBQ15/1.1 90 – 450 l/h 9: RBQ15-20/1.8 150 – 1050 l/h 10: RBQ20/2.5 180 – 1300 l/h 11: RBQ25/4.0 300 – 2000 l/h 12: RBQ32/6.0 600 – 3600 l/h	R/W
143	Volume flow rate Vnom	l/h	R
144	Volume flow rate setting	l/h (hydraulic volume flow rate balancing)	R/W
135	Flushing timer	Value in minutes (0; 60 – 32767 minutes) 0 = inactive (default) 60 = smallest interval 32767 = largest interval	R/W
319	Flushing timer – time remaining until next flushing procedure	Value in minutes (0 – 32767 minutes)	R
136	VBS time (valve anti block function)	Value in hours (0; 24 – 4320) 0 = inactive 24 = smallest interval 4320 = largest interval	R/W
320	VBS time until next flushing procedure	Value in hours (1 – 4320)	R
123	Sensor type P1	0 = off 1 = binary input 2 = 0 – 10 V 3 = KP10 4 = Ni1000 5 = Ni1000LG 6 = PT1000 (default)	R/W
425	Sensor type P2	0 = off 1 = binary 2 = 0 – 10 V 3 = KP10 4 = NI1000 5 = NI1000LG 6 = PT1000 (default) 8 = Y output 0 – 10 V (register 426 = 0 – 1000) 9 = Y feedback 0 – 10 V	R/W
426	Y at output P2	Voltage value (0 – 1000) for a 0 – 10 V output signal at terminal P2 (if register 425 = 8; P2 = output 0 – 10 V	R

R = Read-only access to register

R/W = Read/write access to register

Note:
Supported Modbus functions 0x03 Read Holding Register
0x06 Write Holding Register
0x03 Read Holding Multiple
0x10 Write Holding Multiple

Automatic detection of the closing point

The valve closing point is detected during the initialisation run. During operation, a cyclical reinitialisation takes place.

Positioning
The actuator is a modulating actuator. The control signal (0 – 100%) is transmitted via Modbus communication. The current position (0 – 100 %/mm) can be queried via Modbus.

Valve anti block function
The actuator has a valve anti block function that can be switched on. The cycle time can be set or changed as part of Modbus parameter setting. If the value is 0, this function is deactivated. The automatic valve anti block function prevents the spindle from blocking if the valve remains idle for a prolonged period of time

Temperature measurement
The flow and return temperatures can be captured with two temperature sensors and queried via Modbus.

Flushing
The actuator has a function for automatic flushing. The valve opens fully for the flushing procedure. The cycle time can be set or changed as part of Modbus parameter setting. If the value is 0, this function is deactivated.

Leak detection
Automatic leak detection based on the flow and return temperatures and with the valve being closed. A temperature difference greater than 8 K for at least 6 hours with the valve closed indicates a leak.

Indication of operating status and faults
Operating status and fault signals are captured by the actuator and can be queried via Modbus. This data helps to assess the condition of the hydraulic system and detect faults at an early stage.

Creating flow characteristics

Various valve types and the corresponding flow characteristics can be selected as part of Modbus parameter setting. These flow characteristics are used to determine a minimum and a maximum volume flow rate (only with valve QTZ or RBQ).

Configuration of hydraulic balancing values
A maximum volume flow rate (hydraulic balancing) for heating and one for cooling can be set as part of Modbus parameter setting (only with QTZ or RBQ).

Volume flow rate calculation
If a pressure-independent valve (QTZ or RBQ) is used, the volume flow rate actual value can be determined based on the selected flow characteristic and the actual actuator position, and it can be queried via Modbus.

Downloads

product information

Product data sheet type X-VALVE-MOD-KP-MD15-Q-J6

X-VALVE-MOD-KP-MD15-Q-J6_PD_2022_04_20_DE_en Product data sheet 530 KB pdf

operation manuals

Installation and commissioning instructions X-Valve

X-VALVE_IM_A00000092206_V1_2022_01_GB_en Installation and commissioning instructions 340 KB pdf

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X-VALVE-MOD-KP-MD15-Q-J6

For the secondary treatment of air, downstream of heating and cooling coils in water-side applications, in defined zones, offices and meeting rooms

General information

Description

Technical information

Function, Specification text, Order code

Variants, Technical data, Product details

Downloads

product information

Product data sheet type X-VALVE-MOD-KP-MD15-Q-J6

operation manuals

Installation and commissioning instructions X-Valve

TECHNICALLY NECESSARY

STATISTICS AND WEBSITE ANALYSIS

CONVENIENCE AND PERSONALISATION

FOR THE BEST TROX EXPERIENCE