Rockwell Automation 837E Solid-State Temperature Sensors - Manual (Page 27)

837E Solid-State Temperature Sensors User Manual
Technical Data
Pub #75054-004-08, March 2013 25
Technical Data
Display Version
Power Supply
Supply voltage
• DC voltage version
12…30 V DC
Current consumption
• Without load < 60 mA, with reverse polarity protection
Power supply failure
• Behavior in case of overvoltage (> 30 V)
The device works continuously up to 34V DC without any damage. No damage is caused
to the device in case of a short-term overvoltage up to 1 kV (as per EN 61000-4-5). If the
supply voltage is exceeded, the properties specified are no longer guaranteed.
• Behavior in case of undervoltage
If the supply voltage drops below the minimum value, the device switches off (status as
if not supplied with power = switch open).
Output
Switching capacity
• Switch status ON: I
a
250 mA
• Switch status OFF: I
a
1 mA
• Switching cycles: > 10,000,000
• Voltage drop PNP:
2 V
• Overload protection
Automatic load testing of switching current; output is switched off in case of
overcurrent, the switching current is tested again every 0.5 sec.; max. capacitance load:
14
F for max. supply voltage (without resistive load).
Load (analog output)
• Max. (V
supply
- 6.5 V) / 0.022 A
Signal on alarm
• Analog output:
3.6 mA or 21.0 mA adjustable
(if setting
21.0 mA the output is 21.5 mA)
• Switch outputs: in safe state (switch normally open)