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Temperature switch OTR31, OTR35
11.3
Power supply
11.3.1
Supply voltage
DC voltage version: 12 to 30 V
Behavior in case of overvoltage (> 30 V)
• The device works continuously up to 34 V
• No damage in the event of transient overvoltage up to 1 kV (according to EN 61000-4-5)
• If the supply voltage is exceeded, the specified characteristics are no longer guaranteed
Behavior in the event of undervoltage
If the supply voltage falls below the minimum value, the device switches off in a defined
manner (status is the same as for not supplied with power = switch open).
The device may be powered only by a power supply unit that operates using a limited
energy circuit in accordance with UL/EN/IEC 61010-1, Section 9.4 and the requirements
in Table 18.
11.3.2
Current consumption
without load < 60 mA with reverse polarity protection
11.4
Output
11.4.1
Switching capacity
• Switch status ON: I
• Switch status OFF: I
• 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 s; max. capacitance load: 14 µF at max.
supply voltage (without resistive load).
11.4.2
Load
Max. (V
- 6.5 V) / 0.022 A
supply
11.4.3
Signal on alarm
• Analog output: can be set to ≤ 3.6 mA ('MIN') or ≥ 21.0 mA ('MAX')
• Switch outputs: in safe state (switch open)
11.5
Environment
• Orientation: No restrictions. However, self-draining in the process must be guaranteed. If
there is an opening to detect leaks at the process connection, this opening must be at the
lowest possible point.
• Any position-dependent zero shift can be corrected; Offset: ± 20% URL
1)
Guaranteed output value at 'MAX' setting: ≥ 21.6 mA.
(reverse polarity protection)
DC
≤ 250 mA
a
≤ 1 mA
a
without any damage
DC
Technical data
1)
)
33
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