Jetter JM-208-480-OEM, User Manual, Page: 111 / 128

JetMove 208-480 14.3 Synchronous Serial Interface (SSI)
Jetter AG 111
14.3 Synchronous Serial Interface (SSI)
14.3.1 Technical Data
14.3.2 Description of Connections
Specification of Mating Connector for X72
• 9-pin male SUB-D connector
• Metallized enclosure
Specification of SSI Cable
• Cable size: 2 * 2 * 0.14 mm² + 2 * 0.25 mm² (AWG 26(4) + AWG 23(2))
2 * 0.25 mm² has to be used for power supply and GND.
• The cables have to be twisted in pairs and included in an overall shielding.
• The following signal lines have to be twisted in pairs:
Clock - and Clock +
DATA - and DATA +
0 V and voltage supply
• The shield has to be connected to the connector housings on both ends of the
cable with the greatest possible surface area.
• Material: Copper
• Temperature class: 60 °C
• Maximum cable length: 100 m
Dependent on the encoder type, the transmission frequency has to be reduced
due to the signal runtimes in long cables.
Technical Data of the SSI Input
Encoder types Multiturn absolute encoder
Scanning up to 2 ms
Transmission frequency 100 kHz ... 1 MHz
Maximum cable length 50 ... 100 m
Type of signal 5 V differential signal
Input impedance 22 k
Bus termination 120 integrated resistance
Electrical isolation None
Ω
Ω