WTI RPC-4850-8N User manual

Distributed by
i-Tech Company LLC
TOLL FREE: [phone] • EMAIL: [e-mail] •
WEB: www.i-techcompany.com

i
Warnings and Cautions:
INSTALLATION INSTRUCTIONS
SECURE RACKING
If Secure Racked units are installed in a closed or multi-unit rack assembly, they may require
further evaluation by Certification Agencies. The following items must be considered.
1. The ambient within the rack may be greater than room ambient. Installation should be such
that the amount of air flow required for safe operation is not compromised. The maximum
temperature for the equipment in this environment is 45°C. Consideration should be given to
the maximum rated ambient.
2. Installation should be such that a hazardous stability condition is not achieved due to
uneven loading.
INPUT SUPPLY
Check nameplate ratings to assure there is no overloading of supply circuits that could have an
effect on overcurrent protection and supply wiring.
GROUNDING
Reliable earthing of this equipment must be maintained. Particular attention should be given
to supply connections when connecting to power strips, rather than direct connections to the
branch circuit.
No Serviceable Parts Inside; Authorized Service Personnel Only
Do not attempt to repair or service this device yourself. Internal components must be serviced by
authorized personnel only.
• Shock Hazard - Do Not Enter
Disconnect Power
If any of the following events are noted, immediately disconnect the unit from the outlet and
contact qualified service personnel:
1. If the power cord becomes frayed or damaged.
2. If liquid has been spilled into the device or if the device has been exposed to rain or water.
Two Power Supplies
Note that this unit includes two separate power circuits. Before attempting to service or remove
this unit, please make certain that both power sources are disconnected.

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RPC-4850-8N Remote Power Controller - User’s Guide

iii
Table of Contents
1. Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-1
2. Unit Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-1
2.1. Front Panel Components . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-1
2.2. Back Panel Components . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-1
3. Quick Start . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-1
3.1. Hardware Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-1
3.1.1. Apply Power to the RPC-4850-8N . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-1
3.1.2. Connect your PC to the RPC-4850-8N . . . . . . . . . . . . . . . . . . . . . . . . . . 3-2
3.2. Communicating with the RPC-4850-8N . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-2
4. Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-1
4.1. Power Supply Connection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-1
4.2 Connecting Switched Devices to the RPC-4859-8N . . . . . . . . . . . . . . . . . . . . . . . 4-2
4.3. Serial Console / RS232 Port Connection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-2
4.3.1. Connecting a Local PC . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-2
4.3.2. Connecting an External Modem . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-2
4.4. Connecting the Network Cable . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-2
5. Configuration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-1
5.1. System Mode and User Mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-1
5.2. Communicating with the RPC-4850-8N . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-2
5.2.1. Accessing the Web Browser Interface . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-2
5.2.2. Accessing the Text Interface . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-3
5.3. Configuration Menus . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-5
5.3.1. The General Parameters Menus . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-6
5.3.2. The Serial Parameters Menu . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-9
5.3.3. Circuit Parameters Menus . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-11
5.3.3.1. Circuit Passwords and Co-Location Features . . . . . . . . . . . . . 5-12
5.3.3.2. The Boot / Sequence Delay Period. . . . . . . . . . . . . . . . . . . . . . 5-13
5.3.4. Network Parameters Menus . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-15
5.3.4.1. IP Security Feature . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-16
5.3.5. The Telnet Parameters Menus . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-18
5.3.6. Web Server Parameters Menus . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-19
5.4. Save Configuration Parameters . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-20
6. Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-1
6.1. Operation via the Web Browser Interface . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-1
6.1.1. The Circuit Status Screen - Web Browser Interface . . . . . . . . . . . . . . . . 6-1
6.2. Operation via the Text Interface . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-3
6.2.1. The Circuit Status Screen - Text Interface . . . . . . . . . . . . . . . . . . . . . . . . 6-3
6.2.2. Switching and Reboot Commands - Text Interface . . . . . . . . . . . . . . . . . 6-4
6.2.3. Applying Commands to Several Circuits - Text Interface . . . . . . . . . . . . 6-6
6.3. Logging Out of Command Mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-6
6.4. The Automated Mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-7
6.5. Manual Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-8
7. Saving and Restoring Configuration Parameters . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-1
7.1. Sending Parameters to a File . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-1
7.2. Restoring Saved Parameters . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-2

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RPC-4850-8N Remote Power Controller - User’s Guide
8. Upgrading the RPC Firmware . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8-1
Appendices
A. Interface Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Apx-1
A.1. Serial Console / RS232 Port Interface . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Apx-1
B. Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Apx-2
C. Customer Service . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Apx-3
Index . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .Index-1
List of Figures
2.1.. . RPC-4850-8 Front Panel . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-1
2.2.. . Back Panel . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-2
3.1 . . RPC-4850-8N Block Diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-2
3.2.. . Circuit Status Screen - Web Browser Interface (Sample Values Show) . . . . . . . . . . . . . 3-4
3.3.. . Circuit Status Screen - Text Interface . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-4
5.1.. . Circuit Status Screen - Web Browser Interface . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-2
5.2.. . Circuit Status Screen - Text Interface . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-4
5.3.. . General Parameters Menu - Web Browser Interface . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-6
5.4.. . General Parameters Menu - Text Interface . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-7
5.5.. . Serial Parameters Menu - Web Browser Interface . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-9
5.6.. . Serial Parameters Menu - Text Interface . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-9
5.7.. . Circuit Parameters Menu - Web Browser Interface . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-11
5.8.. . Circuit Parameters Menu - Text Interface (Circuit 1 Shown) . . . . . . . . . . . . . . . . . . . . 5-11
5.9.. . Network Parameters Menu - Web Browser Interface . . . . . . . . . . . . . . . . . . . . . . . . . . 5-14
5.10. Network Parameters Menu - Text Interface . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-14
5.11. . IP Security Menu - Text Interface . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-16
5.12. Telnet Parameters Menu - Web Browser Interface . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-18
5.13. Telnet Parameters Menu - Text Interface . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-18
5.14. Web Server Parameters Menu - Web Browser Interface . . . . . . . . . . . . . . . . . . . . . . . . 5-19
5.15. Web Server Parameters Menu - Text Interface . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-19
6.1.. . Circuit Status Menu - Web Browser Interface (Sample Values Shown) . . . . . . . . . . . . . 6-2
6.2.. . Circuit Status Screen - Text Interface (Sample Values Shown) . . . . . . . . . . . . . . . . . . . 6-3
6.3.. . The RPC Help Screen - Text Interface . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-4
A.1. . Console Port Interface . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Apx-1

1-1
1. Introduction
Electronic equipment sometimes "locks-up," requiring a service call just to flip
the power switch to perform a simple reboot. The RPC-4850-8N Heavy Duty
Remote DC Power Controller gives you the ability to perform this function
from anywhere, just point your browser to the RPC’s IP address, enter the
secure password, and you’re just a click away from remote power and
reboot control!
Intelligent Power Control
In addition to web browser access, the RPC-4850-8N can also communicate
over any TCP/IP network using standard Telnet, or out-of-band using an
external modem and basic VT100 type terminal emulation.
Security Features and Co-Location Features
To ensure security, access to sensitive configuration and control functions is
protected by a user-defined password and user name. Passwords transmitted
via web browser use basic 64 bit encryption techniques to assure secure access
to your equipment.
The RPC provides two levels of operational passwords; the System
Administrator Level, which allows access to all configuration and switching
functions, and the User Level, which only allows access to assigned circuits
and cannot be used to change unit configuration.
In addition to password security features, the RPC also includes an address
specific IP security mask, which can be employed to prevent unauthorized
network access to the RPC command mode.
Easy to Configure, Easy to Use
The RPC can be configured over the network, via modem, or locally via the
RPC's Console Port. Simple, user-friendly commands let you assign a location
name, set system parameters and view circuit status. Circuits can be switched
On, Off, or booted using circuit numbers or names.
Reliability and Support
The RPC is built in the USA and backed by a two year warranty. NetReach
products are installed in thousands of network sites world wide. Our
customers know they can depend on WTI for superior quality and reliability
for their most mission-critical operations.

1-2
RPC-4850-8N Remote Power Controller - User’s Guide
Typographic Conventions
Throughout this manual, typefaces and characters have been used to denote the
following:
COURIER FONT Indicates characters typed on the keyboard.
For example, /ON 3 or /OFF 4.
[Bold Font] Text set in bold face and enclosed in square brackets
indicates a specific key. For example, [Enter] or [Esc].

2-1
2. Unit Description
2.1. Front Panel Components
As shown in Figure 2.1, the RPC-4850-8N front panel includes the following:
➀ Circuit Status Indicators: A series of eight LED indicators, which light
when power to the corresponding circuit is Switched On.
➁ RDY Indicator: Flashes when the RPC is ready to receive commands.
➂ ON Indicator: Lights when power is applied to the Control Section.
2.2. Back Panel Components
As shown in Figure 2.2, the RPC-4850-8N back panel includes the following
components:
➀ Ground Screw
➁ Default Button: This button can be used to either reset the unit to default
parameters or manually toggle all circuits On or Off:
• Default Parameters: To set all parameters to default values, first
pull out both the Input Bus A and Bus B circuit breakers to the open
position. Next, press and hold the Default Button, then press either
Input Bus Circuit breaker in (Closed.) Continue to hold the Default
Button. After about three seconds, the ACT Indicator on the Network
Port will flash. Release the Default button. Make certain to return the
other Input Bus Circuit Breaker to the closed position.
• Manual Circuit Toggle: Press the Default Button and hold it down for
three seconds. All RPC circuits will be toggled On or Off.
Note: If desired, the Default Button's manual circuit control
capabilities can also be disabled as described in Section 5.3.1.
RPC-4850-8
www.wti.com Remote Power Controller
CONTROL
RDY ON
CIRCUITS
1 2 3 4 5 6 7 8
1 2 3
Figure 2.1: RPC-4850-8 Front Panel

2-2
RPC-4850-8N Remote Power Controller - User’s Guide
➂ Console Port: A DB9, RS232 serial port (DTE), for connection to a local
terminal or external modem, as described in Section 4.3.
➃ Network Port and Indicators: An RJ45 Ethernet Port for connection
to your TCP/IP network. The default IP Address is 192.168.168.168,
for more information, please refer to Section 4.4. The Indicator lights
adjacent to the Network Port function as follows:
• ACT: Flashes to indicate activity at the Network Port.
• RDY: Flashes to indicate the Network Port is ready to receive
commands.
➄ Switched Output Circuits: A series of eight -48 VDC, 15 Amp circuits
divided into two terminal blocks.
A. 15 Amp Circuit Breakers: Each circuit includes a 15 Amp breaker.
B. Status Indicators: Each circuit includes a Status Indicator, which
lights when the circuit is switched On.
C. Mounting Screw Receptacles: Each terminal block includes two
mounting screw receptacles, which are used to install the protective
cover (not shown.)
➅ Power Input: Two -48 VDC, 50 Amp input Buses.
D. 50 Amp Circuit Breakers: Each power input bus includes a
50 Amp breaker.
E. Mounting Screw Receptacles: The power input terminal block
includes two mounting screw receptacles, which are used to install
the protective cover (not shown).
50
50
15
15
15
15
15
15
15
15
DEFAULT CONSOLE 10BaseT ACT RDY CKT
1
CKT
2
CKT
3
CKT
4
CKT
5
CKT
6
CKT
7
CKT
8
1 2 3 4 5 6 7 8
BUS A BUS B
Ø -48 Ø Ø Ø Ø Ø Ø Ø-48 -48 -48 -48 -48 -48 -48
-48 -48Ø Ø
123456
D
E
AB
C
Figure 2.2: Back Panel

3-1
3. Quick Start
This Quick Start Guide describes a simplified installation procedure for the
RPC-4850-8N hardware, which will allow you to communicate with the unit in
order to demonstrate basic features and check for proper operation.
Note that this Quick Start procedure does not provide a detailed description
of unit configuration, or discuss advanced operating features in detail. For
more information, please refer to the installation, configuration and operation
sections in this User's Guide.
3.1. Hardware Installation
3.1.1. Apply Power to the RPC-4850-8N
Refer to power rating nameplate on the back panel, and then connect the RPC
unit to an appropriate -48 VDC, 50 Amp (maximum) power source as shown in
Figure 3.1..
CAUTION: Prior to connecting power to the unit, make certain to
review the Safety Precautions listed at the beginning of this User's
Guide.
The RPC features two separate DC inputs; connect power cables to the unit's
Circuit "A" and/or Circuit "B" terminal blocks, install the protective cover over
the Power Input terminal block, and then connect the cables to an appropriate
power supply.
Note that it is not necessary to connect power to both input circuits; either
circuit will supply power for operation and control functions. However, when
power is connected to both input circuits, this allows the second circuit to
function as a back-up in the event of a power outage.
Note that each individual output circuit will support up to 15 Amps maximum,
and that the total for all eight circuits cannot exceed 50 Amps.
Once power is applied to the unit, the ON LED should light, and the RDY
LED should begin to flash. This indicates that the RPC-4850-8N is ready to
receive commands.

3-2
RPC-4850-8N Remote Power Controller - User’s Guide
CONTROL
LOGIC
ISOLATED
POWER
SUPPLY
DC/DC CONVERTER
INPUT A
INPUT B
NETWORK INPUT
10BASE-T
RS232 INPUT
+12
LOGIC
GROUND RL1 RL2 ...
50A
50A
(CIRCUIT
BREAKER)
15A
15A
+12
+12
RL1
RL2
OUTPUT
CKT 1
OUTPUT
CKT 2
-48 VDC
-48 VDC
-48 VDC
-48 VDC
0 VDC
0 VDC
0 VDC
0 VDC
B BUS A BUS
(-48 VDC)
CIRCUITS
3 - 8
Figure 3.1: RPC-4850-8N Block Diagram

3-3
Quick Start
3.1.2. Connect your PC to the RPC-4850-8N
The RPC can either be controlled by a local PC, that communicates with
the unit via cable, controlled via external modem, or controlled via TCP/IP
network. In order to switch circuits On/Off or select parameters, commands
are issued to the RPC via either the Network Port or Console Port. Note that it
is not necessary to connect to both the Network and Console Ports, and that the
Console Port can be connected to either a local PC or External Modem.
• Network Port: Connect your 10Base-T or 100Base-T network interface
to the RPC Network port.
• Console Port: Use the supplied null modem cable to connect your PC
COM port to the RPC Console (RS232) Port.
• External Modem: Use a standard AT to Modem cable to connect your
external modem to the RPC Console (RS232) Port.
Note that when the RPC is shipped from the factory, RS232 Port Parameters
are set as follows: 9600 bps, 8 Data Bits, One Stop Bit, No Parity. Although
the RPC allows these parameters to be easily redefined, for the purpose
of this Quick Start procedure, it is recommended that you configure your
communications program to accept these default parameters.
3.2. Communicating with the RPC-4850-8N
The RPC-4850-8N offers two separate user interfaces: the Web Browser
Interface and the Text Interface. The Web Browser interface allows you to
contact the unit via a TCP/IP network, using a standard, JavaScript enabled
web browser (such as Internet Explorer.) The Text Interface consists of a
series of ASCII text menus, which may be accessed via TCP/IP network, Local
PC or modem using a communications program such as Hyperterminal or
Tera Term.
Note: The RPC features a default IP Address (192.168.168.168) and
a default Subnet Mask (255.255.255.0). This allows initial network
access to command mode without first setting up the unit’s network
parameters (providing that you are contacting the RPC from a node on
the same subnet.) Before attempting to access the RPC from a node
that is not on the same subnet, please refer to Section 5.3.4 for further
configuration instructions.

3-4
RPC-4850-8N Remote Power Controller - User’s Guide
1. Access Command Mode: This procedure differs slightly, depending on
whether you’re contacting the RPC via the Web Browser Interface or Text
Interface.
a) Web Browser Interface: Start your JavaScript enabled Web
Browser. Enter the RPC’s default IP address (192.168.168.168)
in your browser address bar and then press [Enter]. A password
prompt will be displayed. Since at this point, the user name and
password have not yet been defined, you can simply click OK
without keying in a user name or password. The Circuit Status
Screen will be displayed as shown in Figure 3.2.
Figure 3.2: Circuit Status Screen - Web Browser Interface (Sample Values Show)
Remote Power Controller v1.41i Site ID: (undefined)
CKT | Name | Password | Status | Boot/Seq. Delay | Default |
-----+------------------+-------------+--------+-----------------+---------+
1 | (undefined) | (undefined) | ON | 0.5 Secs | ON |
2 | (undefined) | (undefined) | ON | 0.5 Secs | ON |
3 | (undefined) | (undefined) | ON | 0.5 Secs | ON |
4 | (undefined) | (undefined) | ON | 0.5 Secs | ON |
5 | (undefined) | (undefined) | ON | 0.5 Secs | ON |
6 | (undefined) | (undefined) | ON | 0.5 Secs | ON |
7 | (undefined) | (undefined) | ON | 0.5 Secs | ON |
8 | (undefined) | (undefined) | ON | 0.5 Secs | ON |
-----+------------------+-------------+--------+-----------------+---------+
“/H” for help.
RPC>
Figure 3.3 : Circuit Status Screen - Text Interface

3-5
Quick Start
b) Text Interface:
i. Via Telnet: Telnet to the RPC’s default IP address
(192.168.168.168). The Circuit Status Screen (Figure 3.3)
should be displayed.
ii. Via Local PC: Start your communications program and then
press [Enter]. The Circuit Status Screen should be displayed as
shown in Figure 3.3. The default communications parameters
for the Console Port are 9600 bps, No Parity, 8 data bits, One
stop bit.
iii. Via Modem: Use your communications program to dial the
number for the phone line which is connected to your external
modem. Note that in order to communicate with the unit via
modem, you must first access the command mode via Network
or Local PC, and use the Serial Parameters Menu to set the Port
Mode to "Modem."
2. Test Switching Functions: You may wish to perform the following tests
in order to make certain that the RPC is responding to commands.
a) Reboot Circuit: If you are communicating with the unit via the
Web Browser Interface, select the button in the "Boot" column for
Circuit 1, and then click "Apply." If you are operating the unit via
the Text interface, type /BOOT 1 and press [Enter]. The status
indicator for Circuit 1 should go off, pause for a moment, and then
go back on, indicating that the boot cycle has been successfully
completed.
b) Switch Circuit Off: From the Web Browser Interface, select the
button in the "Off" column for Circuit 1, and then click "Apply."
From the Text Interface, type /OFF 1 and press [Enter]. The status
indicator for Circuit 1 should go Off, indicating that the command
has been successfully completed. Leave Circuit 1 in the "Off" state
for now, and then proceed to the next step.
c) Switch Circuit On: From the Web Browser Interface, select the
button in the "On" column for Circuit 1, and then click "Apply."
From the Text Interface, type /ON 1 and press [Enter]. The status
indicator for Circuit 1 should then go back On, indicating that the
command has been successfully completed.

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RPC-4850-8N Remote Power Controller - User’s Guide
3. Log Out: When you have finished communicating with the unit, it is
important to always log off by issuing the appropriate RPC command,
rather than simply closing your Telnet or communications program.
When you log off using the proper RPC command, this ensures that the
unit has completely exited from command mode, and is not waiting for
the inactivity timeout to elapse before allowing additional connections.
a) Web Browser Interface: Click on the "Log Out" button.
b) Text Interface: Type /X and press [Enter].
This completes the Quick Start procedure for the RPC-4850-8N. Please
proceed to Section 4 and Section 5 for complete installation and
configuration instructions.

4-1
4. Installation
This Section provides further details regarding installation of the
RPC-4850-8N unit.
4.1. Power Supply Connection
Connect the RPC-4850-8N unit to an appropriate -48 VDC, 50 Amp power
supply as shown in Figure 3.1.
The RPC includes two separate -48 VDC DC inputs; connect power cables
to the unit's Circuit "A" and/or Circuit "B" terminal blocks, then connect the
cables to an appropriate power supply. Note that it is not necessary to connect
power to both input circuits; either circuit will supply power for operation
and control functions. However, when power is connected to both circuits,
this allows the second circuit to function as a back-up in the event of a power
outage.
After connecting the power cables to the RPC, install the protective cover
(supplied with the unit) over the power input. Make certain that the power
cables are securely fastened to the input terminal block, and then use the
mounting screw receptacles to attach the protective cover to the terminal block.
Apply DC power to the RPC unit; the ON LED should light, and the RDY
LED should begin to flash. This indicates that the RPC is ready to
receive commands.
CAUTIONS:
• Before attempting to install this unit, please review the warnings
and cautions listed at the front of the user's guide.
• This device should only be operated with the type of power
source indicated on the instrument nameplate. If you are not
sure of the type of power service available, please contact your
local power company.
• Reliable earthing (grounding) of this unit must be maintained.
Particular attention should be given to supply connections when
connecting to power strips, rather than directly to the branch
circuit.

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RPC-4850-8N Remote Power Controller - User’s Guide
4.2 Connecting Switched Devices to the RPC-4859-8N
Make certain that the power supply to the RPC unit is switched Off, and
then connect the supply cables from your -48 VDC powered devices to the
Switched Output Circuits on the RPC back panel. Check to make certain that
cables are securely attached, and then install the protective covers over each
output terminal block. The protective covers are held in place by screws that
pass through the holes in the cover and then thread into the screw receptacles
at the end of each Output Terminal Block.
4.3. Serial Console / RS232 Port Connection
The Console Port is a male, RS232C DB9 connector, wired in a DTE
configuration. In the default state, the Console port is configured for 9600
bps, no parity, 8 data bits, 1 stop bit. The Console Port can be connected to
either an external modem or a local PC, but not both items at the same time.
Appendix A describes the Console Port interface.
4.3.1. Connecting a Local PC
Use the supplied null modem cable to connect your PC Console port to the
RPC Console (RS232 Port.) Make certain that the Serial Port Mode is set to
"Console" as described in Section 5.3.2.
4.3.2. Connecting an External Modem
When connecting directly to an external modem, use a standard AT to
Modem cable. Make certain that the modem is initialized at the same default
parameters as the RPC Console Port. Make certain that the RPC Serial Port
Mode is set to "Modem" as described in Section 5.3.2.
4.4. Connecting the Network Cable
The Network Port is an RJ45 Ethernet jack, for connection to a TCP/IP
network. Connect your 10Base-T cable to the Network Port. Note that the
RPC includes a default IP address (192.168.168.168) and a default subnet
mask (255.255.255.0.) When installing the RPC in a working network
environment, it is recommended to define network parameters as described in
Section 5.3.4.
Note: The RPC features a 10Base-T, Half Duplex Interface.
When connecting to a 100Base-T interface, most router switches will
autosense to determine if the device is 100Base-T or 10Base-T, and
then configure the network interface accordingly. If your router switch
does not autosense, the network interface port must be manually
set to 10Base-T.
This completes the RPC installation instructions. Please proceed to the next
Section for instructions regarding unit configuration.

5-1
5. Configuration
5.1. System Mode and User Mode
In order to restrict access to sensitive command functions, the RPC-4850-8N
features two operating modes; System Mode and User Mode.
• System Mode: Allows access to all configuration menus, switching
functions, reboot functions and status screens. The System Mode Status
Screens show On/Off conditions for all switched circuits, and lists all
currently defined system parameters.
• User Mode: Allows access to switching and reboot commands, but
does not allow access to configuration functions. Users may only issue
commands to, or view status of the circuits that are specifically allowed
by their password.
The RPC will display a password prompt when the unit is contacted via
the Console Port or Network Port. The password entered at this prompt
determines whether the unit will start-up in System Mode or User Mode. If
the System Password is entered, the System Mode will be active. If a Circuit
Password is entered, the User Mode will be active. The System Password
is defined via the General Parameters menu (Section 5.3.1), and the Circuit
Passwords are defined via the Circuit Parameters Menus (Section 5.3.3.)
Notes:
• If you wish to restrict access to configuration menus, you must
define the System Password. If the System Password is not defined,
the RPC will always start-up in System Mode, allowing unprotected
access to configuration and switching functions.
• If the System Password is not defined, the Password Prompt will not
be displayed when you access the RPC via the Text Interface. The
prompt will always be displayed when the RPC is contacted via the
Web Browser Interface.
• When the RPC is contacted via Network, the password prompt will
also include a field for the user name. If you have not defined a user
name, then you may leave this field blank, and only the password
is required to gain access to the unit. The user name prompt is not
displayed when the unit is contacted via the Text Interface.

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RPC-4850-8N Remote Power Controller - User’s Guide
5.2. Communicating with the RPC-4850-8N
In order to configure the unit or invoke command functions, you must first
connect to the RPC and access command mode. As discussed in previously,
the RPC offers two separate command interfaces: the Web Browser Interface,
and the Text Interface.
The RPC also offers three different methods for accessing command mode; via
network, via external modem, or via local PC. The Web Browser Interface is
only available when the RPC is contacted via network, and the Text Interface
is available via network, modem or local PC. The sections that follow describe
the procedure for accessing the Web Browser Interface or the Text Interface.
Note: Configuration functions are only available when you have
logged into the RPC command mode using the System Password.
5.2.1. Accessing the Web Browser Interface
In order to use the Web Browser Interface, the RPC must be connected to a
TCP/IP network, and your PC must be equipped with a JavaScript enabled
web browser.
1. Start your JavaScript enabled Web Browser.
2. Key the RPC’s IP address (default = http://192.168.168.168) into the web
browser’s address bar, and then press [Enter].
Figure 5.1: Circuit Status Screen - Web Browser Interface