Kollmorgen S70101 User Manual

11.1.5.4 Bus cable
To meet ISO 11898, a bus cable with a characteristic impedance of 120 Ω should be used.
The maximum usable cable length for reliable communication decreases with increasing
transmission speed. As a guide, you can use the following values which we have measured,
but they are not to be taken as assured limits.
General characteristic Specification
Bit rates 125 kBit, 250 kBit, 500 kBit
Distance with larger
bus connections
500 m at 125 kBaud
250 m at 250 kBaud
100 m at 500 kBaud
Number of nodes 64
Signal environment CAN
Modulation Basic bandwidth
Coupling medium DC-coupled differential transmit/receive operation
Isolation 500 V (option: optocoupler on the transceiver's node side)
Typical differential input im-
pedance (recessive state)
Shunt C = 5pF
Shunt R = 25kΩ (power on)
Min. differential input imped-
ance (recessive state)
Shunt C = 24pF + 36 pF/m of the permanently attached stub
cable
Shunt R = 20kΩ
Absolute max.
voltage range
-25 V bis +18 V (CAN_H, CAN_L). The voltages for CAN_H
and CAN_L refer to the ground pin of the transceiver. The
voltage is higher than that on the V-terminal by the amount of
the forward voltage drop of the Schottky diode. This voltage
drop must be < 0.6V.
Grounding:
The DeviceNet network must only be grounded at one point, to avoid ground loops.
The circuitry for the physical layer in all devices are referenced to the V-bus signal. The
ground connection is made via the power supply for the bus system. The current flowing
between V- and ground must not flow through any device other than the power supply.
Bus topology:
The DeviceNet medium utilizes a linear bus topology. Termination resistors are required at
each end of the connecting cable. Stub cables are permitted up to a length of 6 meters, so
that at least one node can be connected.
Termination resistors:
DeviceNet requires a termination at each end of the connecting cable.
These resistors must meet the following requirements: 120 Ω, 1% metal-film, ¼ W
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Kollmorgen S70101 Specifications

General

Series	S700
Continuous Output Current	10 A
Input Voltage	24 VDC
Output Current	10 A
Communication Interface	EtherCAT, CANopen
Protection Class	IP20
Operating Temperature	0 to 40 °C
Storage Temperature	-25 to 70 °C
Humidity	5% to 95%, non-condensing