Dynalab SW-200B Use and care manual

3690 N.W. 53rd Street, Fort Lauderdale, FL 33309 U.S.A.
[phone] • Fax: [phone] • Web site: www.dynalco.com
© 2000 Dynalco Controls 1200F
DIP SWITCH SETTINGS
Switches 1 & 2 set the
full-scale frequency range Switches 3 & 4 set th
e
overspeed relay logic
DIP
SW 1 DIP SW 2 Full-Scale Range DIP SW 3 DIP SW 4 R
e
Lo
OFF OFF =0 – 11,200 Hz ON N/A =Ene
r
Ab
Set
p
OFF ON = 0 – 5,000 Hz OFF N/A =De-E
n
Ab
Set
p
ON ON = 0 – 1,000 Hz N/A ON = Lat
c
N/A OFF =Doe
L
a
Installation and Calibration Instructions
SW-200B Speed Switch
1. Installation: Mount the SW-200B to a secure bracket off the engine. If
on-engine mounting is necessary, shock mounts are recommended.
Wire according to connection diagram on reverse. Shielded cable is
recommended. Shield should be brought to ground directly. The
SW-200B will work with most magnetic pickups provided the signal
amplitude is greater than 50 mVrms and less than 70 Vrms. Mount
pickup according to manufacturer’s instructions.
2. Calibration: Determine the setpoint frequencies from an RPM value
using the following formula:
Frequency = RPM x No. of Teeth (Holes)
60
A. Verify the current calibration: use a signal generator. Connect it to
the SW-200B magnetic pickup input.
B. Confirm the DIP switches are properly set for the frequency range and
overspeed relay logic desired. (See chart below.)
C. Setthe signal generatoroutput to atleast 10% belowthelowest setpoint.
Slowly increase the frequency. Using an ohmmeter across the relay
contacts, determine the frequency at which each relay changes state.
a. Change a setpoint: removetheappropriate accesshole screwtoreach
the setpoint's relay adjustment trim pot.
b. Setthesignalgeneratortothefrequencyat which therelayshouldchange
state. Connect it to the SW-200B magnetic pickup input.
c. Using a small, flat screwdriver, adjust the trim pot for the appropriate
relay until the relay changes state.
d. Decrease the frequency, then slowly increase it to verify that the relay
trips at the appropriate point. Replace the access hole screw .
SW-200B is a trademark of Dynalco Controls
DYNALCO CONTROLS RESERVES THE RIGHT TO CHANGE THESE SPECIFICATIONS WITHOUT NOTICE.

CONNECTION DRAWINGS
SW-200B