Prosonic S FMU90
Endress + Hauser 9
Output
Analogue outputs
Relay outputs
Number 1 or 2, depending on instrument version
Output signal configurable at the instrument:
• 4 ... 20 mA with HART
1)
• 0 ... 20 mA without HART
1) The HART signal is assigned to the first analogue output. The second analogue output does not carry a HART signal.
Signal on alarm • for setting 4 ... 20 mA, selectable:
– -10% (3,6 mA)
– 110% (22 mA)
– HOLD (last current value is held)
– user specific
• for setting 0 ... 20 mA:
– 110% (21,6 mA)
– HOLD (last current value is held)
– user specific
Output damping freely selectable, 0 ... 1000 s
Load max. 600 Ω, influence negligible
max. ripple U
SS
= 200 mV at 47 ... 125 Hz (measured at 500Ω)
max. noise U
eff
= 2,2 mV at 500 Hz... 10 kHz (measured at 500Ω)
Number 1, 3 or 6; depending on the instrument version
Type potential-free relay, SPDT, can be inverted
Assignable functions • limit (inband, out-of-band, trend, level limit)
• counting pulse
1
(pulse width adjustable)
• time pulse
1
(pulse width adjustable)
• alarm/diagnosis
(e.g. indication of backwater
1)
, sludge
1
, echo loss etc.)
• pump control (alternating/fixed limit/pump rate)
• for FMU90-*3********** and FMU90-*4**********):
additional pump control (standby pump, storm function to avoid unnecessary run
times of the pumps, pump function test, flush control to clean pump shafts, operating
hours alarm, pump alarm)
• rake control (difference or relative measurement)
• fieldbus relay (to be switched direclty from the Profibus DP-bus)
1) for instrument versions with flow software (FMU90 - *2**********)
Switching power • DC voltage: 35 V
DC
, 100 W
• AC voltage: 4 A, 250 V, 100 VA at cosϕ = 0,7
State on error selectable:
• HOLD (last value is held)
• energized
• de-energized
• present value is used
Behaviour after power failure switch-on delay selectable
LEDs
2)
2) for instrument versions with display and operating module
A yellow LED on the front panel is allocated to each relay, which lights if the relay is
energized.
The LED of an alarm relay lights during normal operation.
The LED for a pulse relay briefly flashes at every pulse.
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