Switching Frequency; Filling And Venting - Wilo Stratos PARA/-Z Serie Notice De Montage Et De Mise En Service

• 0-10V:
• Electric strength 24V DC
• Input resistance of the voltage input >100kOhm
• PWM:
• Frequency signal: 100Hz-5000Hz (1000Hz nominal)
• Amplitude signal: 5V-15V (min power 5mA)
• Polarity signal: positive / negative
• SSM: An integrated collective fault signal is applied as a potential-free normally closed
contact. Contact load:
• Permitted minimum: 12 V DC, 10 mA
• Permitted maximum: 250 V AC, 1 A
DANGER! Risk of fatal injury!
Improper connection of the collective fault signal (SSM) contact poses a risk of fatal
injury due to electric shock.
When connecting the SSM to the mains potential, the phase to be connected and phase
L1 on the mains connection cable of the pump must be identical.
• All connection cables must be installed so that they do not touch the pipe and/or the
pumps or motor housing.

• Switching frequency:

• Interval between the switching times: at least 5 s
• Switch on/switch off procedures via mains voltage  300 000 switching cycles during the
service life (80 000 operating hours).
• Switch on/switch off procedures via Ext. In, 0-10V or via PWM  500 000 switching cycles
during the service life (80 000 operating hours)
8 Commissioning
Do not fail to observe the danger information and warnings in Chapters 7, 8.5 and 9!
Prior to commissioning the pump, check that it was installed and connected correctly.
8.1

Filling and venting

NOTE: Incomplete venting will result in noises in the pump and unit.
Prime and vent the unit correctly. The pump rotor room is bled automatically after a short
operating period. Dry running for short periods will not harm the pump.
WARNING! Risk of injury and damage to property!
It is not permitted to remove the motor head or the flange connection / threaded pipe
union for the purpose of bleeding the system!
• There is a risk of scalding!
Escaping fluid can lead to injuries and damage to property.
• Touching the pump can cause burns!
Depending on the pump or system operating conditions (fluid temperature), the entire
pump can become very hot.
Installation and operating instructions Wilo-Stratos PARA/-Z
English
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