Hoffman Controls 610-012A Series Installation & Operating Instructions

Hoffman
Installation & Operating
Instructions

General

The 610-012A Motor Protector offers the latest technology
for providing positive and accurate overcurrent motor (load)
protection. Motor protection is accomplished by monitoring and
integrating the operating currents with current transformers in each
phase of the load. The unique design offers integration of sensed
overload conditions that occur as a result of electrical and mechan-
ical overload abnormalities. Fail-safe operation is provided by
protecting from excessive current in one or more of the following
individual or collective overload conditions:
Electrical Overcurrent
Single Phase
Phase Imbalance
Low/High Voltage
Locked Rotor
Power Factor
Selecting protection (overload) at 8% above nominal FLA
(recommended) will provide both low and high voltage protection
indirectly. (See Figure 1, "Effects of Voltage Variation on Induction
Motor Characteristics".) Other current conditions will be protected
directly by sensing current.
Important: This I&O Instruction only addresses "Across the
Line" motor protection. For "Part Winding Motor" protection
see Form # 173-0207-001.

Specifications

Voltage, Input (Select)
Power
Frequency
Response Time To Trip
Minimum
Maximum
Trip Current Range
Min./Max.
Trip Level Setting
Setting Range
Trip Level Repeat Accuracy
Relay Rating
Volts
Current (Max.)
Ambient Temperature Range
Operating
Storage
Dimensions (L x W x H)
|
Controls
Mechanical Overload
Wear
Binding
Friction
Stall
Torque
24, 120 or 208/240V AC
2.5 VA
60 Hz
2 Sec. @ LRA
20 Min. @ 1.02% FLA
20/175 Amps
Adjustable
24 to 240V AC
4 Amps
–30°C/65°C
–30°C/65°C
5.56" x 3.32" x 1.3"
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FAIL-SAFE — This instruction provides the installer with
the ability to prove that fail-safe motor protection is properly
functioning before the installer sets the required "trip level". This
procedure assures the Controller has been properly installed/wired
and functions in a fail-safe mode. This assurance is important
when the protection of a motor or load is vital to the operation of
a system.
ACCURACY — A Standard Calibration procedure is detailed
on page 3 of this document. The Controller is capable of accuracy
as precise as the test instruments being used.
RESPONSE — The smaller the current tolerance selected
0.2%
(above FLA), the more responsive the performance of the control
± 1%
during overload conditions. Conversely, the larger the current toler-
ance selected (above FLA), the less responsive the control will be to
overload conditions. Response sensitivity may be adjusted above or
below the recommended, nominal 108% setting by changing the trip
current level.
610-012A Series
Overcurrent Motor Protector
with Single & 3∅ Motors
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Effects of Voltage Variation
on Induction Motor Characteristics
Figure 1

Special Features

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