Banner Safe Speed Monitoring Modules - Manual (Page 10)

Setup
Safety Outputs
Motor Min.
Speed (30 rpm)
Set Switch Point Value (5 rpm)
(Potentiometer)
Set Switch Point Value
(30 rpm)
Motor Shuts Off
And Comes to a
Standstill Normal
Operation
Speed
Figure 8. Under-speed Timing
Delay Time
A delay time occurs between the detection of the standstill condition and the turning ON of the safety output contacts; this delay time is
based on the Module's adjusted ipm (input pulses per minute) set value. Calculate the delay time as follows:
(60 seconds ÷ adjusted ipm value) + minimum response time of 2.5 seconds = output ON delay (in seconds) after standstill detection
Example: ipm = 15
(60 seconds ÷ 15) + minimum response time of 2.5 seconds = 6.5 seconds
In this example, the safety output contacts will turn ON 6.5 seconds after the standstill condition is detected. In standstill monitoring
applications, the safety output contacts are OFF when the motor speed is above the standstill switch point setting. When the speed
drops below that value, the output contacts turn ON (close).
Configuring for Under-speed Detection
Under-speed detection is detecting a low speed anywhere within the set range of the Module. For this example, we are using 500 ipm.
1. Turn OFF power to the Module.
2. Using a small flat-blade screwdriver, pry open the Module's front plate.
3. Using the four DIP switches, select a switching range of 300-2,700 or 80-650, depending on the model.
4. Turn the fine-tune potentiometer counterclockwise to the 1 setting.
5. Set the simultaneity potentiometer to the middle position (0).
6. If sensors are not yet installed, install them now so that they can detect the rotation of the motor.
7. Connect the sensors to the Module.
8. Disconnect the wires from the Module safety output contacts 13-14 and 23-24.
9. Connect power to the Module; the Motor should still be OFF.
The Module's Power LED must come ON immediately. The safety output contacts (13-14 and 23-24) and indicators should come ON
after no more than a 3-second time delay, indicating a standstill condition.
10. Start the motor and run it at the speed you want to detect as under-speed (for this example, 500 ipm).
11. The N.C. safety output contacts and indicators must turn OFF.
12. Slowly turn the fine-tuning potentiometer clockwise (1 or 2 degrees at a time), pausing to allow the Module its necessary response
time to detect under-speed. Continue to turn clockwise until both N.C. safety output contacts (13-14 and 23-24) and indicators turn
ON.
13. Increase the motor speed again to normal operating speed.
Both safety output contacts and indicators must turn OFF.
14. To test for the correct setting, slow the motor down below the set value (or turn the motor OFF).
Both safety output contacts and indicators must turn ON again.
15. Wire the safety output contacts into your machine control circuit and verify that the system works according to the requirements.
NOTE: Use the simultaneity potentiometer to adjust simultaneity between the two input channels if only one of them detects the standstill
signal from its assigned sensor.
SSM-FM-11A... Safe Speed Monitoring Modules
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