RA33 Wiring
Endress+Hauser 15
Terminal assignment
Terminals Terminal assignment Inputs
1 + RTD power supply Temperature
(Optionally RTD or current input)
2 - RTD power supply
5+ RTD sensor
6 - RTD sensor
52 + 0/4 to 20 mA input
53 Ground for 0/4 to 20 mA input
54 + 0/4 to 20 mA input Density
(Current input)
55 Ground for 0/4 to 20 mA input
10 + pulse input (voltage or contact) Flow
(Optionally pulse or current input)
11 - pulse input (voltage or contact)
50 + 0/4 to 20mA or current pulse (PFM)
51 Ground for 0/4 to 20 mA input, flow
80 + digital input 1 (switch input) • Time synchronization
• Start batch
• Stop batch
• Reset batch
81 - digital input (terminal 1)
82 + digital input 2 (switch input) • Time synchronization
81 - digital input (terminal 2)
Outputs
60 + status/pulse output 1 (open collector) Batch control: pump/valve, volume
counter, signal for end of batch, fault
61 - status/pulse output 1 (open collector)
62 + status/pulse output 2 (open collector)
63 - status/pulse output 2 (open collector)
70 + 0/4 to 20mA/pulse output Current values (e.g. power) or
counter values (e.g. energy)
71 0/4 to 20mA/pulse output
13 Relay 1 normally open (NO) Batch control: pump/valve, fault
14 Relay 1 normally open (NO)
23 Relay 2 normally open (NO)
24 Relay 2 normally open (NO)
90 24V sensor power supply (LPS) 24 V power supply
(e.g. for sensor power supply)
91 Power supply ground
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