User guide

72
11 Supplement
MINITRAC 31 • Foundation Fieldbus
41782-EN-131119
Ʋ Channel 8 Electronics temperature
Ʋ Channel 9 Pulse rate
Transmission rate 31.25 Kbit/s
Current value 10 mA, ±0.5 mA
Resolution, digital > 0.1 mm (0.004 in)
Output variable - Real value correction
Output
Ʋ Signal digital output signal, Foundation Fieldbus protocol
Ʋ Physical layer according to IEC 61158-2
Damping (63 % of the input variable) 0 … 999 s, adjustable
Channel Numbers
Ʋ Channel 1 Process value
Ʋ Channel 8 Electronics temperature
Ʋ Channel 9 Pulse rate
Transmission rate 31.25 Kbit/s
Current value 10 mA, ±0.5 mA
Resolution, digital > 0.1 mm (0.004 in)
Relay output
Output Relayoutput(SPDT),oatingspdt
Switchingvoltage
Ʋ Min. 10mV
Ʋ Max. 253VAC,253VDC
Switchingcurrent
Ʋ Min. 10 µA
Ʋ Max. 3 A AC, 1 A DC
Breaking capacity
Ʋ Min. 50 mW
Ʋ Max. 750VAAC,40WDC
Ifinductiveloadsorstrongercurrentsareswitched
through,thegoldplatingontherelaycontactsurfacewill
be permanently damaged. The contact is then no longer
suitableforswitchinglow-levelsignalcircuits.
Contact material (relay contacts) AgNi or AgSnO and Au plated
Transistor output
Output Floating transistor output, permanently shortcircuit-proof
Load current < 400 mA
Voltageloss <1V
Switchingvoltage <55VDC
Blocking current < 10 µA