Electrical isolation is provided and the components comply
with both PELV and galvanic isolation requirements. The
components also comply with the requirements for higher
isolation and the relevant test as described in
EN 61800-5-1.
All control terminals and relay terminals 01-03/04-06
comply with PELV.
Installation at high altitude
Installations exceeding high altitude limits may not comply
with PELV requirements. The insulation between
components and critical parts could be insufficient. There
is a risk of overvoltage. Reduce the risk of overvoltage
using external protective devices or galvanic isolation.
NOTICE
For installations at high altitude, contact Danfoss
regarding PELV compliance.
4.3.5.1 Discharge Time
WARNING
DISCHARGE TIME
The servo drives and the SAB contain DC-link capacitors
that remain charged for some time after the mains
supply is switched off at the SAB. Failure to wait the
specified time after power has been removed before
performing service or repair work could result in death
or serious injury.
•
To avoid electrical shock, fully disconnect the
SAB from the mains and wait for at least the
time listed in
for the capacitors to fully
discharge before carrying out any maintenance
or repair work on the ISD 510 servo system or
its components.
Number
Minimum waiting time (minutes)
0–64 servo drives
10
Table 4.8 Discharge Time
4.3.6 Maintenance
The SAB is mainly maintenance free. A maintenance
interval for the cooling fans (approximately 3 years) is
recommended in most environments.
The ISD is largely maintenance free. Only the shaft seal (if
used) is subject to wear.
Component Maintenance
task
Maintenance
interval
Instruction
Servo drive
Carry out a
visual
inspection.
Every 6 months Check for any
abnormalities on
the surface of
the servo drive.
Shaft seal
Check the
condition and
check for
leakage.
Recommended
every 4500 hrs.
A shorter or
longer interval
is possible
depending on
the application.
If damaged,
replace the shaft
seal.
Hybrid cable Check for
damage and
wear.
Every 6 months If damaged or
worn, replace
the hybrid cable.
Mechanical
holding
brake
(optional)
Check the
brake.
Every 6 months Ensure that the
brake can
achieve the
holding torque.
Functional
safety
Perform a
system power
cycle and
check the STO
function.
Every 12
months
Activate the STO
and check the
status with the
PLC.
SAB
Check the fan. Every 12
months
Check that the
fan can turn and
remove any dust
or dirt.
Table 4.9 Maintenance Tasks
4.3.7 Storage
Like all electronic equipment, SABs and servo drives must
be stored in a dry, dust-free location with low vibration
(veff
≤
0.2 mm/s). Do not store the packaged system
components on top of each other. The storage location
must be free from corrosive gases. Avoid sudden
temperature changes.
Keep the equipment sealed in its packaging until instal-
lation. Periodic forming (capacitor charging) is necessary
once per year during storage.
NOTICE
To recondition the electrolytic capacitors, servo drives
and SABs not in service must be connected to a supply
source once per year to allow the capacitors to charge
and discharge. Otherwise the capacitors could suffer
permanent damage.
System Integration
VLT
®
Integrated Servo Drive ISD
®
510 System
42
Danfoss A/S © 08/2017 All rights reserved.
MG36C102
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