Endress+Hauser Liquiphant FTL64 - Performing Device Function Tests; Electronic Insert Function Test Procedure

Liquiphant FTL64 Electrical connection
Endress+Hauser 27
Behavior of switch output and signaling
3 54
3 54
6 87
6 87
3 54
3
3
5
5
4
4
6 87
6
6
8
8
7
7
MAX
RD YE GN
MIN
A0033513
 21 Behavior of switch output and signaling, electronic insert FEL64 DC
MAXDIP switch for setting MAX safety mode
MIN DIP switch for setting MIN safety mode
RD LED red for alarm
YE LED yellow, switch status
GN LED green, operational status, device on
6.3.5 PFM output (electronic insert FEL67)
• For connecting to the Nivotester FTL325P and FTL375P switching units from Endress
+Hauser
• PFM signal transmission; pulse frequency modulation, superimposed on the power supply
along the two-wire cabling
• Functional testing without level change:
• A functional test can be performed on the device using the test button on the electronic
insert.
• The functional test can also be prompted by disconnecting the supply voltage or triggered
directly by the Nivotester FTL325P and FTL375P switching unit.
Supply voltage
U = 9.5 to 12.5 V
DC
Reverse polarity protection
Comply with the following according to IEC/EN61010-1: provide a suitable circuit
breaker for the device.