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Installation and Operation Instructions for
Dual Set Point Speed Switch
HD9063 Series
Please read the following information before installing. A visual inspection of this product for damage during shipping is recommended
before mounting. It is your responsibility to have a qualified person install this unit and make sure it conforms to NEC and local codes.
WARNING
BEFORE BEGINNING INSTALLATION OF THIS MURPHY PRODUCT
✔
Disconnect all electrical power to the machine.
✔
Make sure the machine cannot operate during installation.
✔
Follow all safety warnings of the machine manufacturer.
✔
Read and follow all installation instructions.
Description
The HD9063 Series is a unitized two set point speed switch with
SPDT relay outputs. HD9063 is a PC-board configuration with
standoffs for mounting in a control panel or cabinet.
Models are available for crank disconnect/overspeed and for
underspeed/overspeed applications. Trip points can be field
adjusted on all models. LED's next to the set point potentiometers
indicate that the trip point has been reached and the relay(s) have
operated. An overspeed test circuit is built-in; it will actuate the
output relay at a point below actual overspeed set point.
The HD9063 can disconnect the starter on automatic start engine
applications and shutdown the engine if an overspeed situation
occurs. Re-engagement of the starter is inhibited until RPM
returns virtually to zero.
HD9063-USOS models allow operation of control circuits
according to the speed of the driver or as a pre-alarm.
Two separate adjustable speed switches are included on one
common board.
GENERAL INFORMATION
Specifications
Power Supply:
Voltage: 8-30 VDC
Maximum Current: 150 mA
Frequency Signal:
Voltage, Magnetic Pickup Signal Models
• Minimum: 0.35 Vrms
• Maximum: 60 Vrms
Maximum Current, Magnetic Pickup Signal Models: 4.8 µA.
Adjustment Range, Magnetic Pickup Signal Models
• HD9063 Model
• HD9063-USOS Model
Reset Differential, Magnetic Pickup Signal Models
• HD9063 Model
• HD9063-USOS Model
Output: Relay Contact, SPDT, Resistive Load: (2) 5 A, 30 VDC
Adjustment: (2) 270°–turn potentiometer
Temperature Range: 14 to 158°F (-10 to 70°C)
HD-96044N page 1 of 4
Crank Disconnect: 250-6,000 Hz
Overspeed: 1,100-10,000 Hz
Underspeed: 200-5,800 Hz
Overspeed: 1,100-10,000 Hz
Crank Disconnect: Dropout 160 Hz ± 5%
Overspeed: 200 Hz Differential
Underspeed: +5% of Set point Differential
Overspeed: 155 Hz ± 10% Differential
HD-96044N
Revised 03-01
Section 20
(
00-02-0179)
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Summary of Contents for Murphy HD9063 Series
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Page 1: Specifications
✔ Read and follow all installation instructions. Description The HD9063 Series is a unitized two set point speed switch with SPDT relay outputs. HD9063 is a PC-board configuration with standoffs for mounting in a control panel or cabinet. Models are available for crank disconnect/overspeed and for underspeed/overspeed applications. - Page 2 Crank Disconnect Relay An understanding of the crank disconnect function for your par- ticular system is critical to speed switch installation. It is also important to consider the 5 A current limitation of K1 relay con- tacts. Figure 1 illustrates the use of a low-current pilot relay to operate the high-current starter solenoid.
- Page 3 2. Connect the magnetic pickup cable conductors to terminals 6 and 7. 3. If cable is shielded, connect shield to engine chassis ground. 4. If desired, connect a normally open test push button switch between terminals 8 and 9. 5. Connect crank disconnect circuit to crank disconnect termi- nals 1 thru 3 as discussed in Crank Disconnect Relay Function, page 2.
- Page 4 Warranty A limited warranty on materials and workmanship is given with this FW Murphy product. A copy of the warranty may be viewed or printed by going to www.fwmurphy.com/support/warranty.htm FRANK W. MURPHY, LTD. Church Rd.; Laverstock, Salisbury SP1 1QZ; U.K.