6
DDT40 Adaptive Defrost Control
Trippers are “IN”
Indicates
Refrigeration
“Green”
LED ON
DDT40 TRIPPERS
MODE A
In Refrigeration Mode
Arrow on timer points to current time.
Note: It is necessary to apply power across terminals 1&N in order to perform electrical test.
DDT40 TRIPPERS
MODE B
In Refrigeration Mode
Arrow on timer points to current time.
In Defrost Mode
Arrow on timer points to current time.
Trippers are
“OUT”
Indicates
Defrost
“Red”
LED ON
L1
L2/N
F
3
1
2
4
X
N
“1 & F” Make
“1 & 3” Break
“2 & 4” Make
CONTROL
POWER
TERMINATE
INPUT
L1
L2/N
F
3
1
2
4
X
N
“1 & F” Break
“1 & 3” Make
“2 & 4” Break
CONTROL
POWER
TERMINATE
INPUT
Trippers are “IN”
Indicates
Refrigeration
Both LED’s
OFF
In Defrost Mode
Arrow on timer points to current time.
Trippers are
“OUT”
Indicates
Defrost
Both LED’s
ON
L1
L2/N
F
3
1
2
4
X
N
“1 & F” Make
“1 & 3” Break
“2 & 4” Break
CONTROL
POWER
TERMINATE
INPUT
L1
L2/N
F
3
1
2
4
X
N
“1 & F” Break
“1 & 3” Make
“2 & 4” Make
CONTROL
POWER
TERMINATE
INPUT
Note:
Although wiring is equivalent, the DDT40 will not fit inside of a Paragon Enclosure. This enclosure will need to be
changed out with the provided Grasslin™ Enclosure.
Paragon
Precision
Grässlin
™
Mode
Selection
Terminal Ident.
Label
Wiring
Diagram
Terminal Layout
TIME INITIATED, TIME TERMINATED
8045
®
6045
DDT40
A
8045
5
F 3 1-N 2 4 X
8041
®
6041
DDT40
A
8041
2
N 1
X
3 2 4
8047
®
6047
DDT40
B
8047
4
N 1 3 4 2 2
TIME INITIATED, REMOTE TEMPERATURE OR PRESSURE TERMINATED
8145
®
6415
DDT40
A
None
1, 6
F 3 1 2 4 N X
8141
®
6141
DDT40
A
8141
7
N 1 3 2 4 X
8143
®
---
DDT40
B
8143
8, 9
1 N 3 4 2 X
TIME INITIATED, PRESSURE TERMINATED
(Separate Presure Switch Required (see instructions))
8245
®
---
DDT40
A
8245
10
F 3 1-N 2 4 Xp p
8247
®
---
DDT40
B
8247
3
N 1 3 2 4 Xp p
Cross Ref.
DDT40 replaces over 40 models
TABLE 1
Defrost Control Replacement Selector
