Wiring The Control Terminal Block; Figure 2.6 - Typical Control Terminal Connections - Reliance electric SP120 Manual De Instrucciones Y Operación

2.5 Wiring the Control Terminal Block

24V
IMPORTANT: Only one frequency
source may be connected at a time.
If more than one reference is
connected at the same time,
an undetermined frequency
reference will result.
To improve noise immunity, the
control terminal block common
(terminal L) must be connected
to ground terminal/protective earth.
Installing and Wiring the Drive
ATTENTION: Control terminals are isolated, but not tied to earth ground.
If terminal (L) on the control terminal block is not grounded, exposed
!
conductors, shields or metal conductors can be at hazardous voltage
levels. Failure to observe this precaution could result in severe bodiy
injury or loss of life.
Ensure that the following requirements are met when wiring the control terminal block:
•
Run all signal wiring in either a shielded cable or separate metal conduit.
•
Do not exceed control wiring length of 20 meters (65.6 feet).
2
•
Use 0.75 mm (18 AWG) wire for the alarm relay. Torque the mounting screws to
0.5-0.6 Nm (4.4-5.3 in lb).
•
Use 18 AWG to 28 AWG (0.75 to 0.14 mm
wire for all other signal connections. Torque all connections to 0.2 to 0.25 Nm (1.77
to 2.21 in lb).
•
Avoid crossing the power lines or motor lines with the control wires. If they must
cross, ensure that they cross at right angles (90
•
If using transistor outputs 11 or 12 with an inductive load such as a relay, install a
recovery diode parallel to the relay, as shown in figure 2.6, to prevent damage to the
output.
Figure 2.6 shows typical control terminal connections.
Internal
External
Power
Power
P24
1
2
3
4
5
L
Frequency Reference
1-2k Ohm Pot.
0-10V
4-20mA
Figure 2.6 – Typical Control Terminal Connections
2
), twisted pair, shielded, or 3-conductor
o
).
24V
P24
1
4.4k
2 680
3
4
PTC
5V
4.4k
5.1k
5
4.4k
680 680
L
10V
H
O
OI
L
English
0-10V
FM
V
L
11
=
+
CM2 –
24V
12
=
CM2 – +
24V
Fault Relay
230V AC
AL0
~
AL1
AL2
2-7