Motor Thermal Overload Protection; Emc Compliant Installation; Optional Brake Resistor - Invertek Drives OPTIDRIVE E3 User Manual

4.10.4. Digital Inputs
Up to four digital inputs are available. The function of the inputs is defined by parameters P-12 and P-15, which are explained in
section 7. Analog and Digital Input Macro Configurations on page 37.

4.11. Motor Thermal Overload Protection

4.11.1. Internal Thermal Overload Protection
The drive has an in-built motor thermal overload function; this is in the form of an "I.t-trP" trip after delivering >100% of the value set in
P-08 for a sustained period of time (e.g. 150% for 60 seconds).
4.11.2. Motor Thermistor Connection
Where a motor thermistor is to be used, it should be connected as follows:
Refer to section 7. Analog and Digital Input Macro Configurations for further information regarding configuration of the input functions.

4.12. EMC Compliant Installation

Category
C1 6
C2
C3
A screened (shielded) cable suitable for fixed installation with the relevant mains voltage in use. Braided or twisted type screened
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cable where the screen covers at least 85% of the cable surface area, designed with low impedance to HF signals. Installation of
a standard cable within a suitable steel or copper tube is also acceptable.
A cable suitable for fixed installation with relevant mains voltage with a concentric protection wire. Installation of a standard cable
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within a suitable steel or copper tube is also acceptable.
3 A cable suitable for fixed installation with relevant mains voltage. A shielded type cable is not necessary.
A shielded cable with low impedance shield. Twisted pair cable is recommended for analog signals.
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The cable screen should be terminated at the motor end using an EMC type gland allowing connection to the motor body
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through the largest possible surface area. Where drives are mounted in a steel control panel enclosure, the cable screen may be
terminated directly to the control panel using a suitable EMC clamp or gland, as close to the drive as possible. For IP66 drives,
connect the motor cable screen to the internal ground clamp.
Compliance with category C1 conducted emissions only is achieved. For compliance with category C1 radiated emissions,
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additional measures may be required, contact your Sales Partner for further assistance.
Permissible cable length with additional external EMC filter.
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4.13. Optional Brake Resistor

Optidrive E3 Frame Size 2 and above units have a built in Brake Transistor. This allows an external resistor to be connected to the
drive to provide improved braking torque in applications that require this.
The brake resistor should be connected to the "+" and "BR" terminals as shown in the diagrams in sections 4.2. Connection Diagram.
The voltage level at these terminals may exceed 800VDC.
Stored charge may be present after disconnecting the mains power.
Allow a minimum of 10 minutes discharge after power off before attempting any connection to these terminals.
Suitable resistors and guidance on selection can be obtained from your Invertek Sales Partner. The brake transistor is enabled here by
setting P-34 > 0. See section 6. Parameters for more information.
16 | Optidrive ODE-3 IP66 Outdoor Rated User Guide | Version 1.00
Control Terminal Strip
Supply Cable Type Motor Cable Type
Shielded 1
Shielded 2
Unshielded 3
Compatible Thermistor: PTC Type,

U se a setting of P-15 that has Input 3 function as External Trip,
e.g. P-15 = 3. Refer to section 7. Analog and Digital Input Macro
Configurations on page 37 for further details.

Set P-47 = ""
Control Cables
Shielded 1,5
Shielded 1, 5 Shielded
Shielded 2
Additional Information
2.5kΩ trip level.
Maximum Permissible
Motor Cable Length
1M / 5M
4 5M / 25M
25M / 100M
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