SOMMER SPA-2, Руководство пользователя

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Wire color Pin Function Description
white 1 GND Ground
brown 2 Vsupply 9…27 VDC
green 3 Trigger low: 0…0.6 V, high: 2…27 V
red 4 IOUT1 Level (4…20 mA)
yellow - RS-485 A RS-485 (1200…115200 Baud)
grey - RS-485 B
rosa - SDI-12 SDI-12 (1200 Baud)
blau - IOUT2 Temperature (4…20 mA)
Table 3: Connection wires of USH-9
7.3.8 Power supply
The SPA-2 is designed for extreme environmental conditions at remote sites and with no grid con-
nection. The sensor switches automatically into standby-mode between measurements and thus
consumes only approx. 0.2 Ah per day (measurement duration 6 sec and measurement interval 60
sec) which can be supplied by a 12V-solar-generator mounted to the mast.
7.3.9 Signal cables
Please consider the maximum cable lengths for the applied transmission protocol:
Protocol Max. cable length [m]
SDI-12 60
RS-485 300
Table 4: Maximum cable lengths
NOTE Cable lengths longer than 60 m require a heavier gauge wire if the
power supply drops below 11 V.
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40 Manual