JUMO flowTRANS MAG S Series Safety Manual page 26

4 Ex relevant data for operation in zones 1, 21 and 22
Input and output connection
Terminal Function
31/32 Current/HART output - The current output is available in "active" or "passive" mode. The configuration
must be specified when ordering the unit, since the configuration cannot be changed on-site.
97/98 PROFIBUS-PA (PA+/PA-) or FOUNDATION Fieldbus (FF+/FF-) – according to IEC 61158-2
51/52 Digital output DO1 active/passive - Function can be configured locally as "Pulse output" or "Binary out-
put". The default setting is "Pulse output".
81/82 Digital input/contact input - Function can be configured using software on-site as "External output
switch-off", "External counter reset", "External counter stop", or "Other". Only available in conjunction
with "passive" current output.
41/42 Digital output DO2 passive - Function can be configured using software on-site as "Pulse output" or
"Binary output". The default setting is "Binary output", flow direction signaling.
PA Potential equalization (PA)
IMPORTANT (NOTE)!
The transmitter and sensor housing must be connected to the potential equalization PA. The operator
must ensure that when connecting the protective conductor (PE), no potential differences can occur be-
tween the protective conductor (PE) and potential equalization (PA).
A temperature of 70 °C (158 °F) is assumed at the cable entry for the Ex calculations. The cables used
for the voltage supply and the signal inputs and outputs must therefore have a minimum specification of
70 °C (158 °F).
26