COMMISSIONING
vacon • 127
24-hour s358 (0)40 837 1150 • Email: [email protected]
8
8.
COMMISSIONING
8.1
Safety
Before commissioning, note the following directions and warnings:
1
Internal components and circuit boards of the frequency converter are live
when Vacon NX Liquid-Cooled drive is connected to mains potential. Com-
ing into contact with this voltage is extremely dangerous and may
cause death or severe injury.
2
The motor terminals U, V, W and the DC-link/brake resistor terminals B–,
B+/R+, R– are live when Vacon NX Liquid-Cooled drive is connected to
mains, even if the motor is not running.
3
The control I/O-terminals are isolated from the mains potential. However,
the relay outputs and other I/O-terminals may have a dangerous control
voltage present even when Vacon NX Liquid-Cooled drive is disconnected
from mains.
4
Do not make any connections with the frequency converter connected to
the mains.
5
After having disconnected the frequency converter from the mains, wait
until the indicators on the keypad go out (if no keypad is attached see the
indicator through the keypad base). Wait 5 more minutes before doing any
work on Vacon NX Liquid-Cooled drive connections. Do not even open the
cover before this time has expired.
6
Before connecting the NX Liquid-Cooled drive to mains, ensure the func-
tionality of the coolant circulation and check the circulation for possible
leaks.
7
Before connecting the drive to mains make sure that the switchgear en-
closure door is closed.
8.2
Commissioning of the frequency converter
1
Read carefully the safety instructions in Chapter 1 and above and follow them.
2
After the installation, pay attention:
-
that both the frequency converter and the motor are grounded.
-
that the mains and motor cables comply with the requirements given in Chapter 6.1.1.
-
that the control cables are located as far as possible from the power cables (see Chapter
6.1.3, step 3) and the shields of the shielded cables are connected to protective earth
. The
wires may not touch the electrical components of the frequency converter.
-
that the common inputs of digital input groups are connected to +24V or ground of the I/O
terminal or the external supply.
3
Check liquid cooling connections and system operation.
-
open the shut-off valves
-
check the quality and quantity of the cooling liquid (chapter 5.2)
-
ensure the proper operation of liquid circulation system
WARNING
DANGER