Technical data Batch Controller RA33
54 Endress+Hauser
Digital inputs The digital inputs can be used for external control. A batch run can be started or stopped via these
inputs, or the inputs can prevent a new batch from starting. In addition, the time can also be
synchronized.
10.0.2 Output
Current/pulse output
(optional)
This output can be used either as a 0/4 to 20 mA current output or as a voltage pulse output. The
output is galvanically isolated (500 V testing voltage towards all other inputs and outputs).
Current output
Pulse output
2 x relay output The relays are designed as NO contacts. The output is galvanically isolated (1500 V testing voltage
towards all other inputs and outputs).
2 x digital output (open
collector, optional)
The two digital inputs are galvanically isolated from one another and from all the other inputs and
outputs (testing voltage: 500 V). The digital outputs can be used as status or pulse outputs. The open
collector outputs are particularly suitable for a high number of switching cycles since, in contrast to
relays, these outputs are non-wearing.
Auxiliary voltage output
(transmitter power supply)
The auxiliary voltage output can be used to power the transmitter or control the digital inputs. The
auxiliary voltage is short-circuit proof and galvanically isolated (500 V testing voltage towards all
other inputs and outputs).
Output range: 0/4 to 20 mA + 10 % over range
Load: 0 to 600 Ω (as per IEC 61131-2)
Accuracy: 0.1 % of full scale value
Temperature drift: 0.01 %/K (0.056 %/°F) of the full scale value
Inductive load: Max. 10 mH
Capacitance load: Max. 10 μF
Ripple: Max. 12 mVpp on 600 Ω for frequencies < 50 kHz
D/A converter resolution: 14 bit
Frequency: Max. 12.5 kHz
Pulse width: Min. 40 μs
Voltage level: Low: 0 to 2 V
High: 15 to 20 V
Maximum output current: 22 mA
Short-circuit proof
Max. relay switching capacity: AC: 250 V, 3 A
DC: 30 V, 3 A
Minimum contact load: 10 V, 1 mA
Min. switching cycles: >10
5
Frequency: Max. 1 kHz
Pulse width: Min. 500 μs
Current: Max. 120 mA
Voltage: Max. 30 V
Voltage drop: Max. 2 V in conductive state
Maximum load resistance: 10 kΩ
!
Note!
For higher values, the switching edges are flattened.
Output voltage: 24 V DC ±15% (not stabilized)
Output current: Max. 70 mA
HART
®
signals are not affected.
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