Figure 3-51 Through-Panel Mounting Cut-Out Details; Figure 3-52 Through-Panel Mounting Cut-Out Details; Figure 3-53 Installing The Heatsink Mounted Braking; Figure 3-54 Connecting The Brake Resistor On A - Emerson unidrive sp User Manual

Safety Product Mechanical
Information Information Installation
3.11.2 Size 1 and 2 heatsink mounted braking resistor
If the drive has been used at high load levels for a period of time, the heatsink and heatsink mounted braking resistor can reach
temperatures in excess of 70°C (158°F). Human contact with the heatsink and heatsink mounted braking resistor should be prevented.
WARNING
To avoid the risk of fire when the drive is surface mounted with the braking resistor installed, the back plate should be a non-flammable
material.
WARNING
The size 1and 2 have been designed with an optional space-saving heatsink mounted resistor. The resistor can be installed within the heatsink fins
of the drive. When the heatsink mounted resistor is used, an external thermal protection device is not required as the resistor is designed such that
it will fail safely under fault conditions. The in-built software overload protection is set up at default to protect the resistor. The resistor is rated to
IP54 (NEMA12).
If the drive is to be through-panel mounted with the heatsink mounted brake resistor installed, then the aperture in the panel through which the
drive is mounted must be modified as shown in Figure 3-51 and Figure 3-52. This is in order to allow for the braking resistor cables and grommets.
Figure 3-51 Through-panel mounting cut-out details for size 1
(2.362in)
15.6mm
(0.614in)
The part numbers for the resistor kits are as follows:
Size 1: 1220-2756-01
Size 2: 1220-2758-01
3.11.3 Size 1 braking resistor installing instructions
Figure 3-53 Installing the heatsink mounted braking resistor on size 1
Figure 3-54 Connecting the brake resistor on a surface mounted size 1
Unidrive SP User Guide
Issue Number: 13
Electrical Getting Basic
installation Started parameters
60mm
∅15.0mm
(0.591in)
∅6.5mm
(0.256in)
93mm
(3.661in)
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Running SMARTCARD
Optimization
the motor operation
Figure 3-52 Through-panel mounting cut-out details for size 2
66mm
(2.598in)
Each kit contains the following:
• A braking resistor assembly
• A through-panel grommet
• An installation sheet
• A wire clip (Size 2 only)
• Remove both terminal covers as detailed in section
3.3.1 Removing the terminal covers on page 29.
• Remove the two break-outs that line-up with the BR and +DC
terminal connections as detailed in section 3.3.2 Removing the
finger-guard and DC terminal cover break-outs on page 32.
• Install the braking resistor to the heatsink as shown in Figure 3-53.
The resistor is installed with captive screws.
• The screws should be tightened to a maximum torque of 2 N m
(1.5 lb ft).
• Ensure the cables are routed between the fins of the heatsink, and
that the cables are not trapped between heatsink fins and the
resistor.
• Install the DC terminal cover grommets supplied in the accessory
box with the drive, to the cables. To ensure a good seal, the
grommets are a tight fit. Lubrication may be required to help install
the grommets to the cables.
• Terminate the cables with suitable crimps and connect to the BR
and +DC terminals. Tighten the screw terminals to a maximum
torque of 1.5 Nm (1.1 lb ft).
• Replace both terminal covers.
Onboard Advanced Technical
Diagnostics
PLC parameters Data
115mm
(4.528in)
∅15.0mm
(0.591in)
∅6.5mm
(0.256in)
148mm
(5.827in)
UL Listing
Information
61