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1-12
Installing Your 1394 SERCOS Interface System
Mounting the External
Shunt Resistor for 5 and 10
kW System Modules
Mounting External Shunt
Modules for 22 kW System
Modules
Publication 1394-5.20 — July 2001
If your 5 or 10 kW 1394 system module requires a means of
dissipating regenerative energy that exceeds the capacity of the
internal shunt resistor, install a 1394 External Shunt Resistor Kit
(catalog number 1394-SR10A).
To avoid the hazard of shock or burn and ignition of
ATTENTION
flammable material, appropriate guarding must be
provided. These resistors can reach temperatures in
!
excess of 350 ° C (662 ° F). Install per local codes.
To install the 1394-SR10A Shunt Resistor Kit use two M10 (3/8 in.)
bolts and mount the external shunt resistor assembly vertically on a
flat rigid metal surface that will not be subjected to shock, vibration,
moisture, oil mist, dust or corrosive vapors.
Note: To extend the leadwire length up to 15 m (49 ft total overall
length), use MTW, 105 ° C, (302 ° F) Class H insulated wire (UL
styles 3349, 3374, or equivalent).
If you are using a 22 kW system module, you must use a shunt
module (1394-SR9A, -SR9AF, -SR36A or -SR36AF). An external shunt
module is required for 22 kW system modules because there is no
internal shunt resistor.
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