Remote Annunciator Panel; User Password; Ac Voltmeter; Altering The Serial Communications Setup - Generac Power Systems E Operating Manual

Remote Annunciator Panel

(Refer to manuals 0A7450 and 0A9825)
The serial connections can be configured to allow the
control panel to
annunciator/remote relay panel, which is configured
as RS485, to meet NFPA 110. Only one communica-
tion port is available for either a modem or remote
annunciator.
The following diagram and instructions apply only
to those units manufactured before January 2000.
Units manufactured after January 2000 incorpo-
rate a selector switch on the back of the control
module. This switch will allow selection of either
RS232 or RS485 without opening the module.

Altering the Serial Communications Setup

The E option control panel is capable of being used
with either a modem or a remote annunciator/
remote relay panel, depending on the configuration of
the serial connections. The unit comes set up for con-
nection to a modem (RS232). In order to use the con-
trol panel with a remote annunciator/remote relay
panel (RS485), adhere to Figure 1.5 and the instruc-
tions that follow.
1. Remove harness retaining screws, then unplug all
five wire harnesses from the back of the E panel
control module.
2. Remove the four phillips head screws retaining the
rear cover of the control module.
3. Open the back of the control module.
4. Locate the DB-9 wire harness that runs from the
DB-9 connector on the back panel to the black
header on the lower circuit board inside the con-
trol module.
5. Carefully remove the black connector from
the header by pressing the locking tab and
lifting up.
6. Insert the black connector into the RS485
header (J11). Make sure that the connector is fully
inserted and that the locking tab snaps into place.
7. Replace the back panel and the four screws.
Figure 1.5 – E Panel Serial Communications
Setup Modification
10 Generac ® Power Systems, Inc.
Section 1 — General Information
E Option Control Panels
connect to a
NOTE:

USER PASSWORD

The user can set the password. This is a six-digit
number and is initially set to 000000.
remote

ADDITIONAL PANEL COMPONENTS

In addition to the control module, the E option panel
contains the following components (see Figure 1.6):

AC VOLTMETER

This meter indicates the generator AC output voltage.
To determine the nominal rated AC voltage of the
unit, refer to the unit's data plate.
Some generators are re-connectable to a variety of
voltages. Some units may be equipped with a
rotary "Voltage Selector Switch." Be sure to read
the "Generator AC Lead Connections" section in
the Owner's Manual.
AC AMMETER
This meter indicates the current draw of connected
electrical loads, in amps. Also see "Line-phase
Selector Switch." For continuous operation, never
exceed the rated maximum continuous current
capacity of the generator.
FREQUENCY METER
This meter indicates the generator's AC output fre-
quency in "Hertz" (cycles per second).
LINE-PHASE SELECTOR SWITCH
This four-position switch permits selection of either
line-to-line or line-to-neutral readings on the panel volt-
meter and ammeter. Switch positions are as follows:
Switch
1
2
3
OFF
Figure 1.6 – E Option Panel Components
NOTE:
Single-phase Units Three-phase units
Line E1 to Neutral
Line E3 to Neutral
Line E1 to E3
No Reading
Line E1 to E2
Line E2 to E3
Line E3 to E1
No Reading