Invertek OPTIDRIVE Coolvert - Page 20

20 | Optidrive CoolVert User Guide | Version 1.00 www.invertekdrives.com
3
Installation
3.3.5. Recommended “STO” Wiring
Using an External 24V DC Power Supply Using the Drives On-board 24V DC Supply
STATUS 1
STATUS 2
L1 L2 L3 U V WEMC
- Twisted-Pair
- Shielded cables
Protective Capped Trunking
or equivalent to prevent
STO Cable short circuit to an
external Voltage source.
Safety relay
Protective Capped Trunking
or equivalent to prevent
STO Cable short circuit to an
external Voltage source
.
Safety
relay
Protected
shielded cables
STATUS 1
STATUS 2
L1 L2 L3 U V WEMC
0V
+24Vdc
External
Power
Supply
1 2 3 4 5 6 7 8 9 10 11
1 2 3 4 5 6 7 8 9 10 11
STATUS 1
STATUS 2
L1 L2 L3 U V WEMC
- Twisted-Pair
- Shielded cables
Protective Capped Trunking
or equivalent to prevent
STO Cable short circuit to an
external Voltage source.
Safety relay
Protective Capped Trunking
or equivalent to prevent
STO Cable short circuit to an
external Voltage source
.
Safety
relay
Protected
shielded cables
STATUS 1
STATUS 2
L1 L2 L3 U V WEMC
0V
+24Vdc
External
Power
Supply
1 2 3 4 5 6 7 8 9 10 11
1 2 3 4 5 6 7 8 9 10 11
+24V DC
Wires should be
protected against
short circuits as shown
above
NOTE The Maximum cable length from Voltage source to the drive terminals should not exceed 25 metres.
3.3.6. Motor Thermal Overload Protection
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
P1-08 for a sustained period of time (e.g. 130% for 10 seconds).
Motor Thermistor Connection
Where a motor thermistor is to be used, it should be connected as follows:
Control Terminal Strip Additional Information
0V Common Modbus TX/RX + Modbus TX/RX - +24V Output (100mA) Digital Input 1 Analogue Input 1 0V Common STO + STO - User Relay A User Relay B
 Compatible Thermistor: PTC Type,
2.5kΩ trip level.
 When using a motor thermistor connected
to the drive analogue input is shown in
the diagram, Parameter P3-10 (Modbus
register 310) must be set to a value of 8
(PTC).
1 2 3 4 5 6 7 8 9
10
11
PTC