Connection Diagram, Precharging (Only Size 7) - Moog MSD Operation Manual

Electrical installation
moog
ID no.: CA65642-001 06/2018
4.8.6

Connection diagram, precharging (only Size 7)

Designation
G395-250
Fuses 2, slow blow
Mains filter (optional) 300 A
Mains choke (U = 2 %) 250 A
k
K1 (e.g. Siemens 3RT10 65-
6AP36)
K2 12 A / 5.5 kW / 24 V (e.g. Siemens 3RT10 17-1AB01)
K3 7 A / 3 kW / 24 V (e.g. Siemens 3RT10 15-1AB01)
Table 4.9 Example data for Figure 4.17
Wire the precharging circuit according to the standards using short circuit proof cables.
The connection ratings for the internal relay for the terminals X44/3, 4 are
U = 30 V DC, I = 6 A. Use an auxiliary contactor K3.
max max
Control process
y Precharging the DC link
Switch S1 "Mains supply On" is switched on. The precharging contactor K2 closes and the DC link is
precharged via internal precharging resistors on terminal X45. The main contactor K1 remains open
initially.
y Precharging completed
At a defined DC link voltage the contact on the internal relay on terminal X44/3,4 is closed. The auxiliary
contactor K3 closes and switches on the main contactor K1. The precharging contactor K2 is opened via
an auxiliary contact (normally closed contact) on K1. The MSD Servo Drive changes to ready to operate.
y Switching off
Via switch S1 "Mains supply Off" the servo drive is completely disconnected from the mains.
Specification
G395-325 G395-450
For values see Table 4.10
400 A 500 A
325 A 450 A
(e.g. Siemens 3RT10 75- (e.g. Siemens 3RT10
6AP36) 76-6AP36)
MSD Single-Axis System Operation Manual AC-AC Servo Drive
L1
L2
L3
N
PE
Fuses 2
Main conductor K1 K2
Fuses 1
short cicuit proof
Mains lter
(optional)
Mains choke
L1 L2 L3 PE ZK- ZK+ L1 L2 L3 1
Mains Precharge Control
supply
X11 X45
G395-250
G305-325
G395-450
X12
RB
− +
Braking
resistor
Figure 4.17 Connection example, precharging, control/mains supply 3 x 230/400/460/480 V
for Size 7
CAUTION! Shutdown of the precharging!
In order to protect the servo drive against thermal overload, it must be ensured that the
precharging of the DC link is not set for more than 2 minutes without the main contactor
being active. The precharging of the DC link is not designed for high power consumption during
operation.
Failure to do so may destroy the device!
K3
K1
24 V
Precharge circuit S1
K1
K3 K2
2 3 4 5 6 7
Supply and
triggering of the
internal motor brake
relay
X44
PE U V W
36