Schweitzer Engineering Laboratories SEL-700G Series, Instruction Manual

Page: 72 / 824

2.20
SEL-700G Relay Instruction Manual Date Code 20170814
Installation
Rear-Panel Connections
Figure 2.10 SEL-700GW With Copper Ethernet, 4 DI/4 DO, 4 AI/4 AO, 3 ACIE, 3 ACIZ
(MOT 0700GW1A1A6X77870310)
Power Connections
The
POWER
terminals on the rear panel,
A01 (+/H)
and
A02 (—/N),
must connect
to 110–240 Vac, 110–250 Vdc, or 24–48 Vdc (see Power Supply on page 1.12
for complete power input specifications). The
POWER terminals are isolated
from chassis ground. Use 14 AWG (2.1 mm
2
) to 16 AWG (1.3 mm
2
) size wire
to connect to the
POWER
terminals.
For compliance with IEC 60947-1 and IEC 60947-3, place a suitable external
switch or circuit breaker in the power leads for the SEL-700G; this device
should interrupt both the hot
(+/H) and neutral (-/N) power leads. The
maximum current rating for the power disconnect circuit breaker or optional
overcurrent device (fuse) should be 20 A.
Operational power is internally fused by a power supply fuse. See Field
Serviceability on page 2.37 for details. Be sure to use fuses that comply with
IEC 60127-2.
Grounding (Earthing)
Connections
You must connect the ground terminal labeled
GND
on the rear panel to a rack
frame or switchgear ground for proper safety and performance. Use 14 AWG
(2.5 mm
2
) wire less than 2 m (6.6 feet) in length for the ground connection.
Serial Ports
Because all ports (
F
,
2
,
3
, and
4
) are independent, you can communicate to any
combination simultaneously. Although serial
Port 4
on the optional
communications card consists of an EIA-485 ( 4A ) and an EIA-232 ( 4C ) port,
only one port is available at a time. Use the
Port 4
communications interface
COMMINF setting to select between EIA-485 and EIA-232.
The serial port EIA-485 plug-in connector accepts wire size AWG 24 through
AWG 12. Strip the wires 8 mm (0.31 inches) and install with a small slotted-
tip screwdriver. All EIA-232 ports accept 9-pin D-subminiature male
connectors.
i4493b i4490b
E0
2
E0
3
E04 E05 E06
E0
1
E08 E09 E10 E11 E12
E0
7
D09 D16 D01 D08
Z0
2
IAX
Z0
3
Z04
IB
X
Z05 Z06
IC
X
Z01
AC
I
(a) Rear-Panel View (b) Side-Panel View
DANGER
Contact with instrument terminals
can cause electrical shock that can
result in injury or death.
CAUTION
The relay contains devices sensitive
to Electrostatic Discharge (ESD).
When working on the relay with the
front panel removed, work surfaces
and personnel must be properly
grounded or equipment damage may
result.