Specifications are subject to change without notice (28.10.05)
1
Product Description
Ordering Key
DHA52 is a fully pro-
grammable timer to allow
execution of self-designed
timing functions. The func-
tion can be prepared using
the free PC software BHF
and connecting the unit to a
PC. The user can decide to
leave to the front knob for
final setting the adjustment
of one of the time steps.
For mounting on DIN-rail.
17.5 mm wide housing suit-
able both for back and front
panel mounting.
Fully programmable timing unit
The function is designed with the BHF PC software
Waveform design capability:
up to 16 status changes
each status time range 0.1 s to 100 h
programable trigger input event
time steps can be set from the front knob
Full reprogrammability of the timing functions
Repeatability:
0.2%
Output: 5 A SPDT relay
For mounting on DIN-rail in accordance with DIN/EN 50 022
17.5 mm DIN-rail housing
Combined AC and DC power supply
LED indication for relay status and power supply ON
Output
SPDT relay
Rated insulation voltage
250 VAC (rms)
Contact Ratings (AgSnO
2
)
Resistive loads
AC 1
5 A @ 250 VAC
DC 12
5 A @ 24 VDC
Small inductive loads AC 15
2.5 A @ 250 VAC
DC 13
2.5 A @ 24 VDC
Mechanical life
30 x 10
6
operations
Electrical life
10
5
operations
(at 5 A, 250 V, cos
= 1)
Operating frequency
< 7200 operations/h
Dielectric strength
Dielectric voltage
2 kVAC (rms)
Rated impulse withstand
voltage
2.5 kV (1.2/50 s)
Output Specifications
Type Selection
Housing
Function
Type
Item number
Output
Power supply
Time steps
Mounting
Output
Housing
Supply: 24 VDC and 24 to 240 VAC
DIN-rail
SPDT
Mini-D
DHA 52 C M24 S16
Time Specifications
Time ranges
each step
0.1 to 1 s
1 to 100 s
6 to 600 s
60 to 6000 s
0.1 to 10 h
1 to 100 h
Setting accuracy
(fixed steps)
0.1% +/- 10 ms of the set
value for each step
(knob step)
5%
Repeatability
0.2%
Time variation
Within rated power supply
0.05%/V
Within ambient temperature
0.2%/C
Reset
Manual reset of time
Close the trigger contact
and/or relay
between pins A1 and Y1
Pulse duration
100 ms
Power supply interruption
200 ms
Timers
Fully programmable
Type DHA52
DHA 52 C M24 S16
Power supply
Overvoltage cat. II
Rated operational voltage
(IEC 60664, IEC 60038)
through terminals A1, A2
24 VDC 15% and
24 to 240 VAC + 10% -15%,
45 to 65 Hz
Voltage interruption
10 ms
Rated operational power
1.5 W
Supply Specifications
2
Specifications are subject to change without notice (28.10.05)
Wiring Diagram
DHA52
Power ON delay
100 ms
Indication for
Power supply ON
LED, green
Output relays ON
LED, yellow
(flashing when timing)
Environment
(EN 60529)
Degree of protection
IP 20
Pollution degree
2 (IEC 60664)
Operating temperature
-20 to +60C, R.H. < 95%
Storage temperature
-30 to +80C, R.H. < 95%
Housing dimensions
17.5 x 81 x 67.2 mm
Weight
75 g
Screw terminals
Tightening torque
Max. 0.5 Nm according to
IEC 60947
Approvals
UL, CSA
CE Marking
Yes
EMC
Electromagnetic Compatibillity
Immunity
According to EN 61000-6-2
Emission
According to EN 61000-6-3
General Specifications
Upper knob:
Time setting on relative
scale for the selected steps:
1 to 100 with respect to the
chosen range.
T-RUN PCABLE
PCABLEII (optional):
Connected to the parallel
port of your Personal Com-
puter allows complete pro-
gramming of function and
timing for the unit using the
software BHF.
Function/Time Setting
T-RUN PCABLE/PCABLEII
(optional):
To be connected to the
parallel port of your per-
sonal computer.
BHF software:
to be
downloaded from the
CARLO GAVAZZI site fol-
lowing the links for soft-
ware download.
See the website
www.carlogavazzi.com/ac
Accessories
Mode of Operation
With DHA52 it is extremely
simple to obtain self-
designed timing functions
just preparing two diagrams
with the PC configuration
sofware BHF: one describ-
ing what happens at power
on and one at the trigger
(closing or opening). This
allows a variety of applica-
tions that only fantasy is
able to determine.
After preparing the function
on your PC it is enough to
connect the T-RUN PCABLE
or PCABLEII to the plug and
program the unit. DHA52
becomes your self-cus-
tomized timer with exactly
the function you needed.
The time values can be
selected for setting with the
knob according to what
stated with BHF. Refer to
BHF software for more infor-
mation.
Example:
Setting a 3-blinks function
plus a start activity.
As soon as the power sup-
ply is applied three pulses
are executed. Each one is
separated by the following
one by one second and the
duration is respectively 4, 3,
for the first two pulses and
from 1s to 100s for the third
one, depending on the posi-
tion of the front knob, that
can be set just in time. Clos-
ing the trigger contact caus-
es the three 1 s pulses. In
every case, after finishing
the planned sequence, the
unit waits for the new trig-
ger. In case of trigger event
before finishing the power
on sequence, the trigger
sequence starts.
Additional load
It's possible to wire an addi-
tional load (i.e. a relay)
between pins Y1 and A2,
driven by the trigger contact
without damaging the
device.
Relay ON: See operation
diagrams
Note 1:
The power supply voltage
MUST be switched OFF
while the modular plug is
connected to the unit.
Note 2:
DHA52 can be repro-
grammed (e.g.: in case of
change of function or during
the testing phase) several
times using every time the
same procedure.
Note 3:
The above example is just a
small instance to show how
easy is to obtain more and
more nice and useful func-
tions using DHA52.
67.2
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45
17.5
81
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Dimensions
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