RMS621 Technical data
Endress+Hauser 61
10.0.2 Output
Output signal Current, pulse, transmitter power supply (TPS) and switching output
Galvanic isolation Basic unit:
!
Note!
The specified insulation voltage is the AC testing voltage U
eff
which is applied between the
connections.
Basis for assessment: EN 61010-1, protection class II, overvoltage category II
Output variable current - pulse Current
• 0/4 to 20 mA +10% overreach, invertible
• Max. loop current 22 mA (short-circuit current)
• Load max. 750 Ω at 20 mA
• Accuracy 0.1% of full scale value
• Temperature drift: 0.1% / 10 K (18 °F) ambient temperature
• Output ripple < 10 mV at 500 Ω for frequencies < 50 kHz
• Resolution 13 bit
• Error signals 3.6 mA or 21 mA limit adjustable as per NAMUR NE43
Pulse
Basic unit:
• Frequency range to 12.5 kHz (18 kHz intrinsically safe version)
• Voltage level 0 to 1 V low, 24 V high ±15%
• Load min. 1 kΩ
• Pulse width 0.04 to 1000 ms
Extension cards (digital passive, open collector):
• Frequency range to 12.5 kHz (18 kHz intrinsically safe version)
•I
max.
= 200 mA
•U
max.
= 24 V ± 15%
•U
low/max.
= 1.3 V at 200 mA
• Pulse width 0.04 to 1000 ms
Number
Number:
• 2 x 0/4 to 20 mA/pulse (in basic unit)
Connection with
terminal
designation
Powe
r
suppl
y (L/
N)
Input 1/2
0/4 to 20 mA/
PFM/pulse
(10/11) or
(110/11)
Input 1/2
TPS unit
(82/81) or
(83/81)
Temperatu
re input 1/
2 (1/5/6/
2) or
(3/7/8/4)
Output 1/2
0 to 20 mA/
pulse
(132/131) or
(134/133)
Interface
RS232/485
housing
front or
(102/101)
TPS
unit,
externa
l (92/
91)
Power supply 2.3 kV 2.3 kV 2.3 kV 2.3 kV 2.3 kV 2.3 kV
Input 1/2
0/4-20 mA/PFM/
pulse
2.3 kV 500 V 500 V 500 V 500 V
Input 1/2 TPS unit 2.3 kV 500 V 500 V 500 V 500 V
Temperature input
1/2
2.3 kV 500 V 500 V 500 V 500 V 500 V
Output 1/2
0-20 mA/pulse
2.3 kV 500 V 500 V 500 V 500 V 500 V
Interface RS232/
RS485
2.3 kV 500 V 500 V 500 V 500 V 500 V
TPS unit, external 2.3 kV 500 V 500 V 500 V 500 V 500 V