Operating Instructions MT-xx6-A
Installation
Page 30 of 60
R. STAHL HMI Systems GmbH / OI_MT_xx6_A_en_V_03_00_26.docx / 03.11.2020
11.4.2.2
Connection terminal
Flexible cables with a cross section of 0.2
– 2.5 mm² (AWG24 - AWG14) can be used.
The maximum cable length for the connection with the USB interfaces (X5 and X7) is
2.5 m [8.2 ft].
The insulation of the wire must reach right up to the terminal body.
11.4.2.2.1 Type 1 connection version
The USB device does not require an external power supply as it uses less than 500 mA.
No connection to the mains via other interfaces, e.g. WLAN stick.
Type 1 connection diagram (e.g. WLAN stick)
11.4.2.2.2 Type 2 connection version
The USB device does require an external power supply to function because it uses over
500 mA (e.g. hard disks, CD / DVD drives).
The USB device is connected to the mains via other interfaces (e.g. USB / serial
converter).
Type 2 connection diagram (e.g. hard disk, CD / DVD with power supply)
11.4.2.2.3 Type 3 connection version
The USB device does require an external power supply to function because it uses over
500 mA (e.g. hard disks, CD / DVD drives).
The USB device is connected to the mains via other interfaces (e.g. USB / serial
converter).
The USB device needs the VCC connection of the HMI device (internal supply
– terminal
1) to function.
