20 Technical data
Operating Manual 90° ACTUSAFE CMF(S)QT
OM-ENGLISH-Failsafe-QT-16xx-V2.00-2022.03.01
Jumper JP6 can be used to switch analog input 2 from a passive input (default) to an input with internal 24 V power supply
(for 4. . . 20 mA, two-wire transmitters).
Figure 100:
Passive input (default)
Figure 101:
Input with internal suppy (active input)
NOTE:
The analog input 2 is referenced to common of the electronic system and the auxiliary power supply (see section
20.4
Analog output
Current range: . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 0. . . 20.8 mA
Resolution: . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12 bit
Accuracy: . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 0.5%
Max load: . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 600
Ω
The analog output is galvanically isolated from the rest of the electronic system.
Jumper JP4 can be used to switch the analog output from an active power source (default) to a current sink, allowing the
output to simulate a 4. . . 20 mA, two-wire transmitter.
Figure 102:
Current source
Figure 103:
Current sink
Ground potential is the potential of the control unit and the auxiliary supply (see chapter 20.5).
20.5
Auxiliary voltage input and output
Input voltage range (auxiliary voltage input): . . . . . . . . . . . . . . . . . . . . . . . . . . . 20. . . 30 VDC
Maximum current consumption (auxiliary voltage input): . . . . . . . . . . . . . . . .500 mA
Maximum current consumption in power-save mode . . . . . . . . . . . . . . . . . . . 120 mA
(auxiliary voltage input):
Output voltage (auxiliary voltage output): . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . typ. 23 V
Maximum output current (auxiliary voltage output): . . . . . . . . . . . . . . . . . . . . . 200 mA
Resistance of common ground vs. earth: . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . typ. 500 k
Ω
Resistance of common ground vs. earth (floating version): . . . . . . . . . . . . . > 10 M
Ω
Capacitance of common ground vs. earth: . . . . . . . . . . . . . . . . . . . . . . . . . . . . . typ. 100 nF
Maximum allowed voltage of common ground vs. earth: . . . . . . . . . . . . . . . max. 40 Vs
Fuse (Fuse FL1, see picture 89, page 81): . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 A slow
(Littelfuse 454 NANO
2
Slo-Blo
®
)
Ground potential is the common ground of the controller and the analog inputs and outputs.
The auxiliary voltage output can be set in menu P6.5 (see section 7.5, page 44).
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