Murphy Hd9063

Installation and Operation Instructions for Dual Set Point Speed Switch
HD9063 Series

HD-96044N Revised 03-01 Section 20 (00-02-0179)

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 NECand local codes.
GENERAL INFORMATION

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 switchwith 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 testcircuit 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 thedriver or as a pre-alarm. Two separate adjustable speed switches are included on one common board.

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 CrankDisconnect: 250-6,000 Hz Overspeed: 1,100-10,000 Hz • HD9063-USOS Model Underspeed: 200-5,800 Hz Overspeed: 1,100-10,000 Hz Reset Differential, Magnetic Pickup Signal Models • HD9063 Model Crank Disconnect: Dropout 160 Hz ± 5% Overspeed: 200 Hz Differential • HD9063-USOS Model Underspeed: +5% of Set point Differential Overspeed: 155 Hz ± 10% Differential 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

MOUNTING DIMENSIONS

HD9063 and HD9063-USOS
4 in. (102 mm) Mounting Holes
I I
N

CR

EAS
E

N

CR

EAS
E

2-1/4 in. (57 mm) Mounting Holes

CRANK DISCONNECT

OVERSPEED

EXT. MAG. PICKUP
INTERNAL CRANK DISCONNECT RELAY CONTACTS

NC NO C EXT. POWEREXT. TEST

NC NO C

INTERNAL OVERSPEED RELAY CONTACTS

2-3/4 in. (70 mm)

(+) ( ) (+) ( ) 1 2 3 4 5 6 7 8 9 10 11 12

Mounting Standoffs 4 Places

4-1/2 in. (114 mm) 3/4 in. (19 mm)

Mounting
1. Drill four 3/16 in. (5 mm) diameter mounting holes (refer to mounting hole dimensions above). 2. Align the plastic standoffs on the HD9063 with the 4 mounting holes and push gently untilstandoffs snap into place. CAUTION: Pushing too hard could damage board.

Mounting
1. Drill four 1/4 in. (6 mm) diameter mounting holes (refer to mounting hole dimensions above). 2. Secure with four 10-32 screws.

RELAY FUNCTIONS

Crank Disconnect Relay
An understanding of the crank disconnect function for your particular system is critical to speed switch installation. It is alsoimportant to consider the 5 A current limitation of K1 relay contacts. Figure 1 illustrates the use of a low-current pilot relay to operate the high-current starter solenoid. In operation, battery voltage is supplied through the normally closed contacts of the speed switch crank disconnect relay K1. When the engine starts, K1 energizes and its normally closed contacts open. This action de-energizes the...