Moxa Technologies IMC-21GA Manual

2014 Moxa Inc. All rights reserved.
P/N: 1802000210031
IMC-21GA
Hardware Installation Guide
Moxa Industrial Media Converter
Second Edition, October 2014

- 2 -
Overview
The IMC-21GA series includes industrial 10/100/1000BaseT(X) to
100/1000BaseFX media converters that provide a cost-effective solution,
and are specially designed for reliable and stable operation in industrial
environments.
Package Checklist
Moxa’s IMC-21GA is shipped with the following items. If any of these
items are missing or damaged, please contact your customer service
representative for assistance.
•IMC-21GA media converter
•Hardware installation guide (this guide)
•Warranty card
Features
•The fiber port’s connection speed is DIP switch selectable
•Supports Link Fault Pass-Through (LFP)
•DIN rail mountable
•Multi mode (0.5 km) and single mode (10 km) models with SC fiber
connectors are available
•Operating temperature range from -40 to 75°C (T models)
•10K Jumbo Frame
•Redundant power inputs
•Supports Energy Efficient Ethernet (IEEE 802.3 az)

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Panel Layout
1. Shielding Ground
2. Terminal block for power
input
3. Dip switch
4. Power LED
5. Gigabit Copper (G1) / Fiber
(G2) Port LED
6. SFP module slot
7. 10/100/1000BaseT(X) Port
8. SX/LX Fiber Port, SC
connector
9. DIN rail kit

- 4 -
Mounting Dimensions
DIN Rail Mounting
The aluminum DIN rail attachment
plate should be fixed to the back
panel of the
IMC-21GA when you
take it out of the box. If you need to
reattach the DIN
rail attachment
plate to the
IMC-21GA, make sure
the stiff metal spring is situated
towards the top.
Wiring Requirements
ATTENTION
Safety First!
Be sure to disconnect the power cord before installing and/or
wiring your IMC
-21GA.
Calculate the maximum possible current in each power wire and
common wire. Observe all electrical codes
dictating the
maximum current allowable for each wire size.
If the current goes above the maximum rating, the wiring could
overheat, causing serious damage to your equipment.
•Use separate paths to route wiring for power and devices. If power
wiring and device wiring paths must cross, make sure the wires are
perpendicular at the intersection point.

- 5 -
•Do not run signal or communications wiring and power wiring in the
same wire conduit. To avoid interference, wires with different signal
characteristics should be routed separately.
•You can use the type of signal transmitted through a wire to
determine which wires should be kept separate. The rule of thumb is
that wiring that shares similar electrical characteristics can be
bundled together.
•Keep input wiring and output wiring separated.
•We strongly advise that you label wiring to all devices in the system.
Grounding the IMC-21GA
Grounding and wire routing help limit the effects
of noise due to electromagnetic interference
(EMI). Run the ground connection from the
ground screw to the grounding surface prior to
connecting devices
.
ATTENTION
This pro
duct is intended to be mounted to a well-grounded
mounting surface such as a metal panel.
Wiring the Power Inputs
The 4-contact terminal block connector on the IMC-21GA’s top panel is
used for the IMC-21GA’s two DC inputs. Top and front views of one of the
terminal block connectors are shown here.
STEP 1:
Insert the negative/positive DC wires
into the V
-/V+ terminals.
STEP 2: To keep the DC wires from pulling loose,
use a small flat
-
blade screwdriver to tighten the
wire
-clamp screws on the front of the terminal
block connector.
STEP 3:
Insert the plastic terminal block
connector prongs into the terminal block receptor
located on IMC
-21GA’s top panel.
Redundant Power Inputs
Both power inputs can be connected simultaneously to live DC power
sources. If one power source fails, the other live source acts as a backup,
and automatically supplies all of the IMC-21GA’s power needs.

- 6 -
Communication Connections
RJ45 Ethernet Port Connection
The IMC-21GA has one 10/100/1000BaseT(X) Ethernet port located on
the front panel for connecting to Ethernet-enabled devices.
When connected to a 10/100 Mbps Ethernet port, the pinouts and cable
wiring diagrams for both MDI (NIC-type) and MDI-X (HUB/switch-type)
ports for both straight-through and cross-over Ethernet cables are:
MDI Port Pinouts
MDI-X Port Pinouts
8-pin RJ45
Pin
Signal
1
Tx+
2
Tx-
3
Rx+
6
Rx-
Pin
Signal
1
Rx+
2
Rx-
3
Tx+
6
Tx-
Straight-Through Cable Wiring
Cross-Over Cable Wiring
1000BaseT(X) Ethernet Port Connection
1000BaseT(X) data is transmitted on differential TRD+/- signal pairs over
copper wires. When connected to a 1000 Mbps Ethernet port, the pinouts
and cable wiring diagrams for both MDI (NIC-type) and MDI-X
(HUB/switch-type) ports for both straight-through and cross-over
Ethernet cables are:
MDI/MDI-X Port Pinouts
Pin
Signal
1
TRD (0) +
2
TRD (0) -
3
TRD (1) +
4
TRD (2) +
5
TRD (2) -
6
TRD (1) -
7
TRD (3) +
8
TRD (3) -

- 7 -
1000BaseSFP Fiber Port Connection
The Gigabit Ethernet ports on the IMC-21GA are 1000BaseSFP Fiber ports,
which require using Gigabit mini-GBIC fiber transceivers to work
properly.
The concept behind the LC port and cable is straightforward. Suppose you
are connecting devices I and II; contrary to electrical signals, optical
signals do not require a circuit in order to transmit data. Consequently,
one of the optical lines is used to transmit data from device I to device II,
and the other optical line is used transmit data from device II to device I,
for full-duplex transmission.
Remember to connect the Tx (transmit) port of device I to the Rx (receive)
port of device II, and the Rx (receive) port of device I to the Tx (transmit)
port of device II. If you make your own cable, we suggest labeling the two
sides of the same line with the same letter (A-to-A and B-to-B, as shown
below, or A1-to-A2 and B1-to-B2).
LC-Port Pinouts
LC-Port to LC-Port Cable Wiring
1000BaseSX/LX Fiber Port (IMC-21GA-SX-SC,
IMC-21GA-LX-SC)
The concept behind the SC port and cable is straightforward. Suppose you
are connecting devices I and II. Contrary to electrical signals, optical
signals do not require a circuit in order to transmit data. Consequently,
one of the optical lines is used to transmit data from device I to device II,
and the other optical line is used transmit data from device II to device I,
for full-duplex transmission.
All you need to remember is to connect the Tx (transmit) port of device I
to the Rx (receive) port of device II, and the Rx (receive) port of device I
to the Tx (transmit) port of device II. If you make your own cables, we
suggest labeling the two sides of the same line with the same letter
(A-to-A and B-to-B, as shown below, or A1-to-A2 and B1-to-B2).
SC-Port Pinouts
SC-Port to SC-Port Cable Wiring

- 8 -
ATTENTION
The IMC
-21GA is only compatible with transceiver modules from
Moxa's SFP
-1G series and SFP-1FE series. If you are using the
SFP
-1FESLC-T, SFP-1FELLC-T, or SFP-1FEMLC-T, use version
V1.3 or above to ensure that the IMC
-21GA's media converter
functionality works properly.
ATTENTI
ON
This is a Class 1 Laser/LED product. To avoid causing serious
damage to your eyes, do not stare directly into the laser beam.
DIP Switch Settings
Dip No.
Function
ON
OFF
1
Fiber Speed
100M
1000M*
“ON”: Forces 100 Mbps on fiber port
Note: When setting the mode for the IMC-21GA, use Moxa
SFP-1FE Series SFP modules
“OFF”: Forces 1000 Mbps on fiber port
Note: When setting the mode for the IMC-21GA, use Moxa
SFP-1G Series SFP modules
2
Energy Efficient Ethernet
Enable
Disable*
“ON”: Enable “Energy Efficient Ethernet” to
allow for less power
consumption during periods of low data activity
“OFF”: Disable “Energy Efficient Ethernet”
3
Link Fault Pass Through
Enable
Disable*
“ON”: Enables “Link Fault Pass Through”, the link status on the
TX port will inform the FX port of the same device and vice
versa.
“OFF”: Disables “Link Fault Pass Through”, the link status on
the TX port will not inform the FX port.
4
Reserved
*Default setting
After changing the DIP switch setting, you will need to power off and then
power on the IMC-21GA.

- 9 -
LED Indicators
The front panel of the Moxa IMC-21GA contains several LED indicators.
The function of each LED is described in the table below.
LED
Color
State
Description
PWR1
Amber
On
Power is being supplied to power input (V1+, V1-)
Off Power is not being supplied to power input
(V1+, V1-)
PWR2
Amber
On
Power is being supplied to power input (V2+, V2-)
Off
Power is not being supplied to power input
(V2+, V2-)
G1
GREEN
On
TP port’s 1000 Mbps link is active
Blinking
Data is being transmitted at 1000 Mbps
Off
TP port’s 1000 Mbps link is inactive
Amber
On
TP port’s 10/100 Mbps link is active
Blinking
Data is being transmitted at 10/100 Mbps
Off
TP port’s 10/100 Mbps link is inactive
G2
GREEN
On
Fiber port’s 1000 Mbps link is active
Blinking
Data is being transmitted at 1000 Mbps
Off
Fiber port’s 1000 Mbps link is inactive
Amber
On
Fiber port’s 100 Mbps link is active
Blinking
Data is being transmitted at 100 Mbps
Off
Fiber port’s 100 Mbps link is inactive
LFP: DIP switch is set to “LFP” mode
Device1
TP LED
DUTA TP
LNK
(G1)
LED
DUTA FO
(G2) LED
DUTB FO
(G2) LED
DUTB TP
LNK
(G1)
LED
Device 2
TP LED
TP1 Faulted
OFF
OFF
OFF
OFF
OFF
OFF
F1 Faulted
OFF
OFF
OFF
OFF
OFF
OFF
F2 Faulted
OFF
OFF
OFF
OFF
OFF
OFF
TP2 Faulted
OFF
OFF
OFF
OFF
OFF
OFF

- 10 -
LFP: DIP switch is set to “DIS” mode
Device1
TP LED
DUTA TP
LNK
(G1)
LED
DUTA FO
(G2) LED
DUTB FO
(G2) LED
DUTB TP
LNK
(G1)
LED
Device 2
TP LED
TP1 Faulted
OFF
OFF
ON
ON
ON
ON
F1 Faulted
ON
ON
OFF
OFF
ON
ON
F2 Faulted
ON
ON
OFF
OFF
ON
ON
TP2 Faulted
ON
ON
ON
ON
OFF
OFF
Auto MDI/MDI-X Connection
The Auto MDI/MDI-X function allows users to connect the Moxa
IMC-21GA’s 10/100/1000BaseT(X) ports to any kind of Ethernet device,
regardless of the type of Ethernet cable used for the connection. This
means that you can use either a straight-through cable or cross-over
cable to connect the IMC to Ethernet devices.
Auto-Negotiation and Speed Sensing
All of the IMC-21GA’s RJ45 Ethernet ports independently support
auto-negotiation for transmission speeds of 10 Mbps, 100 Mbps , and
1000 Mbps, with operation according to the IEEE 802.3u standard.
This means that some nodes could be operating at 10 Mbps, while at the
same time, other nodes are operating at 100 Mbps or 1000 Mbps.
Auto-negotiation takes place when an RJ45 cable connection is made, and
then each time a LINK is enabled. The IMC-21GA advertises its capability
for using 10 Mbps, 100 Mbps, or 1000 Mbps transmission speeds, with the
device at the other end of the cable expected to advertise similarly.
Depending on what type of device is connected, this will result in
agreement to operate at a speed of 10 Mbps, 100 Mbps, or 1000 Mbps.
If the IMC-21GA’s RJ45 Ethernet port is connected to a non-negotiating
device, it will default to 10 Mbps speed and half-duplex mode, as required
by the IEEE 802.3u standard.
Specifications
Technology
Standards
IEEE 802.3, 802.3u, 802.3ab, 802.3z, 802.3az
Interface
RJ45 Port
10/100/1000BaseT(X), RJ45 connector
Fiber Port
IMC-21GA-SX/LX-SC: 100/1000Base-SX/LX, SC
connector
IMC-21GA: 100/1000BaseSFP slot
LED Indicators
Power (PWR1, PWR2), G1 (TP Port), G2 (Fiber
Port)