Eurotherm 506 User manual

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All rights strictly reserved. No part of this document may be stored in a retrieval system, or
transmitted in any form or by any means to persons not employed by a Eurotherm group
company without written permission from Eurotherm Drives Ltd.
Although every effort has been taken to ensure the accuracy of this document it may be
necessary, without notice, to make amendments or correct omissions. Eurotherm Drives cannot
accept responsibility for damage, injury, or expenses resulting therefrom.

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Eurotherm Drives warrants the goods against defects in design, materials and
workmanship
for the period of 12 months from the date of delivery on the terms
detailed in Eurotherm Drives Standard Conditions of Sale IA058393C.
Eurotherm Drives reserves the right to change the content and product
specification without notice.

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This manual is to be made available to all persons who are required
to install, configure or service equipment described herein, or any
other associated operation.
The information given is intended to highlight safety issues, and to
enable the user to obtain maximum benefit from the equipment.
Complete the following table for future reference detailing how the
unit is to be installed and used.
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Serial Number
(see product label)
Where installed
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information)
Unit used as a:
(refer to
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RComponent RRelevant Apparatus
Unit fitted: RWall-mounted REnclosure
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The equipment described is intended for industrial motor speed
control.
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Installation, operation and maintenance of the equipment should be
carried out by qualified personnel. A qualified person is someone
who is technically competent and familiar with all safety
information and established safety practices; with the installation
process, operation and maintenance of this equipment; and with all
the hazards involved.
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• The equipment must be permanently earthed due to the high
earth leakage current.
• Before working on the equipment or filter ensure isolation of the
mains supply from terminals L1 and L2.
• The drive motor must be connected to an appropriate safety
earth.
• The EMC filter equipment contains high value capacitors which
take time to discharge after removal of the mains supply. Wait
for at least 3 minutes before working on the filter.
• Never perform high voltage resistance checks on the wiring
without first disconnecting the drive from the circuit being
tested.
• When replacing a drive in an application and before returning to
use, it is essential that all user defined parameters for the
product’s operation are correctly installed.
• This equipment contains electrostatic discharge (ESD) sensitive
parts. Observe static control precautions when handling,
installing and servicing this product.
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The specifications, processes and circuitry described herein are for
guidance only and may need to be adapted to the user’s specific
application.
Eurotherm Drives does not guarantee the suitability of the
equipment described in this Manual for individual applications.
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Under fault conditions, power loss or other operating conditions not
intended, the equipment may not operate as specified. In particular:
• The motor speed may not be controlled
• The direction of rotation of the motor may not be controlled
• The motor may be energised
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The user must provide guarding and /or additional safety systems to
prevent risk of injury and electric shock.
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• All exposed metalwork in the units are protected by basic
insulation and bonding to a safety earth.
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These are not recommended for use with this product but, where
their use is mandatory, only Type B RCDs should be used.
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This is a non isolated product. The signal plus control connections
are not isolated from the AC supply.
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• AC Supply filters produce earth (ground leakage currents in
excess of 3.5mA).
• AC Supply filters contain capacitors, allow at least 1 minute
before servicing.
• AC Supply filters should be permanently earthed (grounded), use
the second Protective Ground terminal as an independent earth
(ground).
• Eurotherm Drives do not recommend the use of RCDs. Special
RCDs (type B-IEC755) are required due to AC and DC
components flowing in the earth (ground) leakage current. All
loads requiring protection with an RCD would be at risk.
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The 506/507/508 series controllers are compact, non-isolated motor
speed controllers specifically designed for dc shunt would and
permanent magnet motors. The controllers are intended to operate
from a single phase AC mains supply in the ranges 110/120V AC or
220/240V AC 50/60Hz.
The controllers are intended to be mounted on a length of DIN rail
in an enclosure.
Control of the associated DC motor is achieved by using a linear
closed loop feedback signal based on the motor's own DC armature
voltage. This enables constant motor speed to be maintained
throughout variable motor loads. Improved speed measurement can
be obtained by using a tacho-generator, connected to the motor's
shaft, to provide the feedback signal.
A current loop within the speed feedback path ensures that safe
current levels are always provided to the armature of the motor up to
the level set by the maximum current potentiometer (Imax). This
adjustment is linear and switchable to a lower range of half the
controller current.
If the controlled motor is stalled (e.g. due to either a faulty field
circuit or an excessive load), then a stall timer will remove current
from the motor after approximately 15 seconds. Severe armature
current overloads, are protected against by an instantaneous over-
current trip.
The controllers may also be used in a linear motor torque mode by
using an adjustable setpoint. In this mode of operation over-speed
limiting is a standard feature.
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Product Rating Adjustment Switched
Standard
506 3A DC Full Load Current 0.5 to 3A 0.25 to 1.5A
507 6A DC Full Load Current 1 to 6A 0.5 to 3A
508 12A DC Full Load Current 2 to 12A 1 to 6A

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Speed /
Torque Potentiometer 10K Isolated spindle and insulating knob
Switch Rated for input supply voltage.
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set to 6% of 180V dc.
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* Contains semiconductor fuses as recommended below.
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For installations requiring compliance with UL Standards.
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An external motor overload protective device must be provided by
the installer. This device can comprise of a thermal sensor within
the motor winding monitored by an external relay but this
combination cannot be evaluated by UL. Hence, it is the
responsibility of the installer/local inspector to determine whether
the combination is in compliance with the National Electrical Code
or local code requirements.
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UL Recognized semiconductor fuses must be installed upstream of
the controllers. Refer to the semiconductor fuses table on the
previous page for recommended semiconductor fuse manufacturer
and type number.
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The 506 and 507 controllers are suitable for use on a circuit capable
of delivering not more than 1000 RMS symmetrical amperes, 240V
maximum; whilst the 508 controller is suitable for use on a circuit
capable of delivering not more than 5000 rms symmetrical amperes,
240V maximum.
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The maximum operating ambient temperature rating is 50oC.
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Use 60oC copper conductors only.
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For correct field wiring connections that are to be made to each
terminal, refer to Chapter 5: “Terminal Description” - Power
Terminals and Chapter 3 “Technical Specification” - Control
Terminals.
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The power wirint terminals accept a maximum conductor size of No.
10 AWG (5.3mm2).

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Refer to the Terminal Tightening torque table shown on page 4-2 for
both the Power and Control Terminals.
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The field grounding terminals are identified with the International
Grounding Symbol (IEC Publication 417, Symbol 5019).