Installation
Electrical Installation
23
Figure 13: Endurance series labeled terminal block
5.3.4. Power Supply
Connections from a nominal 24VDC (500 mA or higher) power supply attach to the appropriate
terminals on the electronic enclosure’s terminal strip.
Isolated power is required, and the appropriate manufacturer supplied
power supply accessory provides this. Beware of use of other power
supplies, which may not provide the necessary isolation and could cause
instrument malfunction or damage!
5.3.5. Computer Interfacing via RS485 link
The distance between the sensor and a computer can be up to 1200 m (4000 ft.) via RS485
interface. This allows ample distance from the harsh environment where the sensing system is
mounted to a control room or pulpit where the computer is located. The USB/RS485 Interface
Converter allows you to connect your Endurance sensor to computers by using an USB
interface.
With auto configuration, the converter is able to automatically configure RS485 signals without
external switch setting. The converter is equipped with 3000 VDC of isolation and internal
surge-protection to protect the host computer and the converter against high voltage spikes, as
well as ground potential difference. When the converter is connected the computer gets one
virtual COM port.
Technical Data
Power supply 5 VDC direct from USB port
Speed max. 256 kBit/s
RS485 4 wire (full duplex) and 2 wire (half duplex)
Terminal screwed accepts 0.05 to 3 mm² (AWG 13 to AWG 30)
USB connector type B (supplied with type A to type B cable)
Ambient Temperature 0 to 60°C (32 to 140°F), 10-90% relative humidity,
non-condensing
Storage Temperature -20 to 70°C (-4 to 158°F), 10-90% relative humidity,
non-condensing
Dimensions (L x W x H) 151 x 75 x 26 mm (5.9 x 2.9 x 1 in)
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