Peaktronics DHC Series Instruction Manual

DHC-100
01-22-04 PRELIMINARY INFORMATION
4
U.S. Patent 4,803,481 applies to this product; other patents pending
PEAKTRONICS
POWER / SIGNAL (J2)
Power is connected to pins 1, 2, and 3 as shown in
the block diagram. The fuse installed on the unit is rated
for maximum output current that can be safely delivered
by the AC outputs. Replacement fuses must not exceed
the maximum rating to prevent damage to the unit.
Smaller fuse sizes can be used with smaller motors - con-
sult the actuator manufacturer for appropriate fuse size
and type.
An appropriate command signal, either 0-5V, 0-
10V, 1-5V, or 4-20mA, should be connected to pin 5 or 6
(as shown in the Block Diagram) while using pin 4 as the
return signal ground. The DHC-100 must be configured
for the type of command signal that is to be used (see
COMMAND TYPE).
Pin 7 of J2 provides an auxiliary +5V output
which can be used to connect a command potentiometer.
By connecting one end of a potentiometer to pin 7, the
other end to pin 4, and the wiper to pin 6, a local control
knob can be implemented. Pin 8 provides an auxiliary
+15VDC output which can be used to power an input or
output 4-20mA transmitter.
ACTUATOR (J1)
The actuator motor and feedback potentiometer
are connected to J1 as shown in the Block Diagram. The
Motor Neutral wire must be connected to pin 2 while one
motor winding is connected to pin 1 and the other winding
to pin 3. The feedback potentiometer wiper must be con-
nected to pin 5 while one end is connected to pin 4 and the
other end to pin 6. The Polarity Detection feature of the
DHC-100 automatically determines which motor winding
to control based on where the open and closed positions
are set; this feature also eliminates the need to rewire the
unit for direct or reverse acting applications.
When the ▲ and ▼ buttons are used to control the
actuator, the ▲ button will turn on the motor winding con-
nected to pin 1, while the ▼ button will turn on the motor
winding connected to pin 3. See MANUAL/FB POT
CAL for more details.
MODE
The MODE button is used to select the desired
function of operation. When the MODE button is pressed,
the unit will switch to the next function and the appropri-
ate LED indicator will turn on to let the user know which
function is selected. Except for the MANUAL/FB POT
CAL mode, the associated mode indicator will be steady
on; for some of the modes other indicators will flash to
indicate specific settings associated with the mode. Each
of the modes are described in more detail in the following
sections.
If a 0-5V or 0-10V command signal is used, the
LOSS OF COMMAND function cannot be used. The
MODE button will skip over the LOSS OF COMMAND
mode when the unit is configured for a 0-5V or 0-10V
command signal (see COMMAND TYPE).
ADJUST UP (▲) and ADJUST DOWN (▼
▼▼
▼)
The adjust up (▲) and adjust down (▼) buttons
are used to adjust the setting of any given function. When
a function is selected by the MODE button, the adjust but-
tons will affect that function only. Note, that the AUTO
mode does not have any adjustable settings, and therefore,
the adjust up (▲) and adjust down (▼) buttons have no
effect.
AUTO
The AUTO function is the normal mode of opera-
tion for the DHC-100; all the other functions are used to
set up the unit. While in AUTO, the unit can be controlled
by various external signals, some of which can be selected
by the COMMAND INPUT function. When the unit is
not
in the AUTO mode, all external controls described
below will be disabled.
Once the open and closed positions have been set,
the AUTO mode will control the position of the actuator
according to the command input signal. For an input sig-
nal of 0V (for 0-5V or 0-10V input), 1V (for 1-5V input),
4.0 mA (for 4-20mA input), or 0% (for a digital input), the
DHC-100 will position the actuator to the closed position
as set by the user. Conversely, an input of 10V, 5V,
20mA, or 100% will position the actuator to the defined
open position.
When the DHC-100 is configured to use a 0-5V,
0-10V, 1-5V, or 4-20mA command, the command signal
should be connected to the appropriate pin on J2 - note
that the unused input pin must
be left unconnected. When
the DHC-100 is configured for a Digital command type,
an appropriate communications option module must be
installed. A communications module may be installed
when using one of the analog command types and can be
used to override the analog command. The AUTO indica-
tor will flash whenever the unit is being controlled by the
communications module.

Peaktronics DHC Series Specifications

General

Brand	Peaktronics
Model	DHC Series
Category	Controller
Language	English