Delta Tau Geo MACRO, User Manual And Reference Manual

Page: 33 / 205

Geo MACRO Drive User and Reference Manual
Connections 21
CONNECTIONS
System (Power) Wiring
MAIN
POWER
EARTH
BLOCK
OPTIONAL
EMI FILTER
MCR
EARTH
FRAME
GARxx
SHUNT
RESISTOR
BLK
BLK
WHT
WHT
24V
POWER
SUPPLY
8AWG
to Main
Earth
Block
Fusing
2
4 V
D
C RE
T
+2
4 V
D
C
L
1
BL
K
RE
D
+24 V
Red
Blk
24V RET
L
2 L
3
J1
AC INPUT
SC
R
E
W
H
EAD
W V U W V U
MOTOR 1
J2
MOTOR 2
J3
SC
R
E
W
H
E
AD
S
C
RE
W
HE
A
D
RE
G
E
N
-
RE
G
E
N
+
J5
SHUNT
J4
LOGIC
BL
K
BL
U
WH
T
GR
N
\Y
E
L
BL
K
BL
U
WH
T
GR
N
\Y
E
L
Geo
MACRO
Twisted Wires
Motor 2
Motor 1
t
e
xtt
e
xt
t
e
xt
t
e
xt
Encoders
X1 X2
WARNING:
Installation of electrical control equipment is subject to many regulations including
national, state, local, and industry guidelines and rules. General recommendations
can be stated but it is important that the installation be carried out in accordance
with all regulations pertaining to the installation.
Fuse and Circuit Breaker Selection
In general, fusing must be designed to protect the weakest link from fire hazard. Each Geo drive is designed
to accept more than the recommended fuse ratings. External wiring to the drive may be the weakest link as
the routing is less controlled than the drive’s internal electronics. Therefore, external circuit protection, be it
fuses or circuit breakers, must be designed to protect the lesser of the drive or external wiring.
High peak currents and high inrush currents demand the use of slow blow type fuses and hamper the use
of circuit breakers with magnetic trip mechanisms. Generally, fuses are recommended to be larger than
what the rms current ratings require. Remember that some drives allow three times the continuous rated
current on up to two axis of motion. Time delay and overload rating of protection devices must consider
this operation.
Use of GFI Breakers
Ground Fault Interrupter circuit breakers are designed to break the power circuit in the event that
outgoing currents are not accompanied by equal and opposite returning currents. These breakers assume
that if outgoing currents are not returning then there is a ground path in the load. Most circuit breakers of
this type account for currents as low as 10mA PWM switching in servo drives coupled with parasitic
capacitance to ground in motor windings and long cables generate ground leakage current. Careful