7. Controller – Level 2
- 27 –
7. Controller – Level 2
7. Controller – Level 2
This section provides connection, adjustment and operational
information for the Level 2 Controller featuring the Automatic
Purge Saving System (APSS). Similar information can be found in
Section 6 for the Level 1, Fixed Cycle Controller.
7.1
Reference Fig
ures
– Level 2 Controller
•
Figure 7-1, Front Panel Overlay – Level 2 Controller
•
Figure 7-2, Electrical Schematic – Level 2 Controller
•
Figure 7-3, Point-to-Point Diagram – Level 2 Controller
•
Figure 7-4, Panel Layouts – Level 2 Controller
•
Figure 7-5, Enclosure Penetrations – Level 2 Controller
7.2
Connections –
Level 2
Controller
See Figure 7-5, Enclosure Penetrations for the location, size and
function of the various cable and cord connectors that are
provided on the bottom of the Level 2 enclosure.
7.2.1
Connections - I
nput P
ower
7.2.1.1
VAC I
nput Power C
onnections
Single-phase, alternating current (AC) input power connections
ranging from 85-264 VAC and 47 to 63 Hz. can be made at
terminals TB6-45, -47, and –49. See reference figures for
proper polarity. These terminals are connected to accessory
output terminals TB6-44, -46, and –48 respectively. Accessory
output terminals can be used to direct power at the same
voltage and frequency to external devices.
CAUTION
: Accessory output terminals are NOT
controlled by the power on/off switch and are always
energized when power is provided to terminals TB6–
45, -47, and -49.
7.2.1.2
VDC Power Co
nnection
s
•
The control and display boards operate on low-voltage
direct current. The controller is provided pre-wired with an
AC to 12 VDC power supply board. For users with AC
power as described in Section 7.2.1.1, their AC input is
directed to the power supply board where it is conditioned
and returned to the control board as 12 VDC at terminals
TB5-42 and –43.
•
For users with direct current (DC) input power ranging
from 11.5 to 28 VDC, use of the AC to DC power supply
board is not needed and their connections can be made
at terminals TB5-42 and –43 by first removing the black
and red leads coming from the power supply board. See
reference figures for proper polarity.
7.2.2
Connections –
Common A
larm Contacts
Connections to voltage-free common alarm contacts with a
minimum 5-amp rating can be made at terminals TB4-39
through –41.
•
Terminal TB4-41 is the common contact connection.
•
Terminal TB4-39 is the N.O. (normally open) contact
connection.
•
Terminal TB4-40 is the N.C. (normally closed) contact
connection.
•
The alarm relay coil is energized when power is supplied
to the controller input terminals and there are no alarms.
•
The coil is de-energized when power is removed or when
an alarm condition exists.
•
Additional information on the common alarm relay logic
appears in Table 7-1.
Power
To
Controller?
Controller
On or
Off?
Alarm or
Service
Reminder
Alarm
Relay
Coil
Alarm
N.O.
Contact
(TB4-39)
Alarm
N.C.
Contact
(TB4-40)
No
N/A
N/A
De-Energized
Open
Closed
Yes
Off
N/A
Energized
Closed
Open
Yes
On
No
Energized
Closed
Open
Yes
On
Yes
De-Energized
Open
Closed
Table 7-1
Common Alarm Relay Logic –Level 2 Controller
7.2.3
Connections –
Remote S
tart / Stop
Terminals TB2-17 and –18 are used to provide a 5 VDC output
to a remote switch or volt free contacts that when closed will
stop the dryer at the end of the current half cycle. The dryer will
resume running at the beginning of the new half cycle when the
remote switch or contacts are reopened. When dryer operation
is in the remote stop state, all four tower drying (green) and
regenerating (amber) LEDs flash simultaneously.
Note: Remote start / stop is disabled when the dryer is in
the Manual cycle operation mode. When the dryer is in the
remote stop state, the only front panel and remote selector
switches (see Section 7.2.4) that remain enabled are the
power on/off switches.
7.2.4
Connections –
Remote S
witches
The controller door is equipped with four momentary-contact,
push button switches. Pressing on the appropriate icon printed
on the display overlay actuates these switches. The display
board containing the switches, display LEDs, text display, and
the RPB (J2) terminal strip is mounted on the inside of the
enclosure door. The terminal strip provides connection points
for remotely mounted, NO (normally open), momentary-contact
push buttons that provide the same function as the board
mounted switches. The terminal – switch combinations are:
•
Terminals J2-1 and –2 (Remote “SELECT” switch)
•
Terminals J2-3 and –4 (Remote “ENTER” switch)
•
Terminals J2-5 and –6 (Remote Power On / Off Switch)
NOTE: Care must be exercised in using this remote
switch to stop a dryer. Closing this switch will affect
Содержание DGH Series
Страница 12: ...4 Installation 12 4 Installation Figure 4 3 continued on next page 590 5400 SCFM General Arrangement...
Страница 22: ...6 Controller Level 1 22 6 Controller Level 1 Figure 6 2 Electrical Schematic Level 1 Controller...
Страница 23: ...6 Controller Level 1 23 6 Controller Level 1 Figure 6 3 Point to Point Connection Diagram Level 1 Controller...
Страница 24: ...6 Controller Level 1 24 6 Controller Level 1 Figure 6 4 continued on next page Panel Layouts Level 1 Controller...
Страница 39: ...7 Controller Level 2 39 7 Controller Level 2 Figure 7 2 Electrical Schematic Level 2 Controller...
Страница 42: ...7 Controller Level 2 42 7 Controller Level 2 Figure 7 4 continued on next page Panel Layout Level 2 Controller...
