Technical data sheet
NF24A-MOD
www.belimo.com
NF24A-MOD • en-us • 2022-03-15 • Subject to change
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Service tools Description
Type
Service Tool, with ZIP-USB function, for programmable and
communicative Belimo actuators, VAV controller and HVAC performance
devices
ZTH EU
Belimo PC-Tool, Software for adjustments and diagnostics
MFT-P
Adapter for Service-Tool ZTH
MFT-C
Connection cable 16 ft [5 m], A: RJ11 6/4 ZTH EU, B: 6-pin for connection to
service socket
ZK1-GEN
Connection cable 16 ft [5 m], A: RJ11 6/4 ZTH EU, B: free wire end for
connection to MP/PP terminal
ZK2-GEN
Electrical installation
Supply from isolating transformer.
The wiring of the line for BACnet MS/TP / Modbus RTU is to be carried out in accordance with
applicable RS485 regulations.
Modbus / BACnet: Supply and communication are not galvanically isolated. Connect earth signal
of the devices with one another.
Wiring diagrams
BACnet MS/TP / Modbus RTU
Cable colors:
1= black
2 = red
3 = white
5 = orange
6 = pink
7 = grey
BACnet / Modbus signal
assignment:
C1 = D– = A
C2 = D+ = B
Connection with passive sensor, e.g. Pt1000, Ni1000, NTC
1) depending on type
2) Resolution 1 Ohm
Compensation of the measured
value is recommended
Connection with active sensor, e.g. 0...10 V @ 0...50°C
Possible voltage range:
0...32 V (resolution 30 mV)
