SAFETY SPEED MONITOR SV MR0 PRELIMINARY NOTE The instructions are part of the unit. They are intended for authorised persons according to the EMC and Low Voltage Directive and safety regulations. The instructions contain information about the correct handling of the product. Read the instructions before use to familiarise yourself with operating conditions, installation and operation.
SAFETY SPEED MONITOR SV MR0 Safety instructions Follow the operating instructions. Improper use may result in malfunctions of the unit. This can lead to personal injury and/or damage to property during operation of the machine. For this reason note all remarks on installation and handling given in these instructions.
SAFETY SPEED MONITOR SV MR0 Operation GENERAL FUNCTION DESCRIPTION The speed monitor is a two-channel pulse evaluation system for safe overspeed detection. To do so, it receives the pulse sequences from the pulse pick-ups connected to the inputs. The module calculate the resulting frequency.
Foh (in this case 950 rpm) (falling frequency) as in the drawing in "Switching function: overspeed". INITIALISATION Directly after power on, the SV MR0 carries out an initialisation comprising a complete self-test. After approx. 3 s the SV MR0 is ready for operation.
SAFETY SPEED MONITOR SV MR0 INSTALLATION Mechanical installation of the device Mount the device on a DIN rail in a housing protected against dust and humidity (min. IP 54). Leave enough space between the unit and the top and bottom of the housing to enable air circulation and to avoid excessive heating.
After the first power on of the device it is necessary to configure the Overspeed Frequency (Fo) using the three decade switches located in front of SV MR0. The switches allow the user to enter the value of the desired preset frequency (as described below).
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SAFETY SPEED MONITOR SV MR0 SWITCH OPERATION / RESULT Start of configuration: Set the 3 switches to configuration position 0/P Switch on the power supply of the device > The LED CONF is blinking Adjust Potentiometer P1 from the position 0/P to the needed Value >...
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SAFETY SPEED MONITOR SV MR0 Examples The switch point value can only be set when operating voltage is connected to the device and the three switches are set as indicated (factory setting). Figure 1 Factory setting Set P1, P2 and P3 to obtain the switch point value. Examples:...
SAFETY SPEED MONITOR SV MR0 AUTOMATIC/MANUAL MODE SELECTIONS If overspeed is detected, the current relay paths open and the drive is switched off. This results that the input frequency falling again below the switch point and the current paths closing (below F...
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SAFETY SPEED MONITOR SV MR0 Figure 5 - Automatic mode selection Automatic mode In this operating mode, the relay outputs of the safety module check the value of the input frequency comparing it with the selected value: > With the input frequency below the selected value the relay outputs are active.
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SAFETY SPEED MONITOR SV MR0 The RESTART command must be installed outside the danger area in a position where the danger area and the entire work area concerned are clearly visible. It must not be possible to reach the control from inside the danger area.
SAFETY SPEED MONITOR SV MR0 ENABLE INPUT: If several modules with different switch points are used for overspeed monitoring of a drive, the devices whose switch point value is not relevant can be "switched off" by means of the enable input pairs.
SAFETY SPEED MONITOR SV MR0 TECHNICAL DATA SV MR0 Voltage supply Supply voltage U 24VDC Voltage range 80 .. 120 % Power consumption < 3 W Device response time (ms) >100Hz) = 10,7 + 400*(f = selected frequency (by potentiometers) = input frequency (from proximities) <100Hz)
SAFETY SPEED MONITOR SV MR0 DEFINITION OF THE LE COLOUR Input IN2 yellow Input IN1 Yellow Indicator Relay K2 Green Indicator Relay K1 Green Indicator Enable Yellow CONF Indicator Configuration Blue Power Indicator Green FAULT Fault Indicator Input Sensor IN2 lights, when a high signal at the input IN2 was detected.
If the feedback function is not required, the terminals (15-16) can be permanently bridged. Checklist after installation Directly after power on, the SV MR0 carries out an initialisation comprising a complete self-test. Anyway to have the system perfect operation perform the following checks at start up and at least every one year: Verify that all the cables are correctly inserted and the terminal blocks well screwed.
SAFETY SPEED MONITOR SV MR0 Application Note The module checks that the two input frequencies are the same (with the appropriate tolerances), regardless of their phase relationship. This means that in a mono-directional movement of the two speed sensors can be distributed in a free manner along the path of detection.
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SAFETY SPEED MONITOR SV MR0 In this case the two inputs will read two different frequencies and the module will go into Fault condition with four flashes of led EXT, IN1 and IN2. The solution in this case is to change the position of the proximity switch (or of the reference marks) so that the pulses can be detected from both proximities.
Precise, complete compliance with all the rules, instructions and prohibitions indicated in this handbook is an essential requirement for correct functioning of the safety interface. ReeR s.p.a. therefore declines any responsibility for all and anything resulting from failure to comply, even partially, with such indications..
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