Timers
Fully programmable
Type DHA52
• 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
Product Description
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.
Ordering Key
Housing
Function
Type
Item number
Output
Power supply
Time steps
DHA 52 C M24 S16
Type Selection
Mounting
DIN-rail
Output
SPDT
Housing
Mini-D
Supply: 24 VDC and 24 to 240 VAC
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
≤
0.1% +/- 10 ms of the set
value for each step
≤
5%
≤
0.2%
≤
0.05%/V
≤
0.2%/°C
Close the trigger contact
between pins A1 and Y1
≥
100 ms
≥
200 ms
Output Specifications
Output
Rated insulation voltage
Contact Ratings
(AgSnO
2
)
Resistive loads
AC 1
DC 12
Small inductive loads AC 15
DC 13
Mechanical life
Electrical life
Operating frequency
Dielectric strength
Dielectric voltage
Rated impulse withstand
voltage
SPDT relay
250 VAC (rms)
µ
5 A @ 250 VAC
5 A @ 24 VDC
2.5 A @ 250 VAC
2.5 A @ 24 VDC
≥
30 x 10
6
operations
≥
10
5
operations
(at 5 A, 250 V, cos
ϕ
= 1)
< 7200 operations/h
2 kVAC (rms)
2.5 kV (1.2/50 µs)
Setting accuracy
(fixed steps)
(knob step)
Repeatability
Time variation
Within rated power supply
Within ambient temperature
Reset
Manual reset of time
and/or relay
Pulse duration
Power supply interruption
Supply Specifications
Power supply
Rated operational voltage
through terminals A1, A2
Overvoltage cat. II
(IEC 60664, IEC 60038)
24 VDC ± 15% and
24 to 240 VAC + 10% -15%,
45 to 65 Hz
≤
10 ms
1.5 W
Voltage interruption
Rated operational power
Specifications are subject to change without notice (28.10.05)
1
DHA52
Function/Time Setting
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.
General Specifications
Power ON delay
Indication for
Power supply ON
Output relays ON
Environment
Degree of protection
Pollution degree
Operating temperature
Storage temperature
Housing dimensions
Weight
Screw terminals
Tightening torque
Approvals
CE Marking
EMC
Immunity
Emission
≤
100 ms
LED, green
LED, yellow
(flashing when timing)
(EN 60529)
IP 20
2 (IEC 60664)
-20° to +60°C, R.H. < 95%
-30° to +80°C, R.H. < 95%
17.5 x 81 x 67.2 mm
75 g
Max. 0.5 Nm according to
IEC 60947
UL, CSA
Yes
Electromagnetic Compatibillity
According to EN 61000-6-2
According to EN 61000-6-3
Accessories
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
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.
Dimensions
17.5
67.2
18.7
Wiring Diagram
81
2
2
45
Specifications are subject to change without notice (28.10.05)
Embedded System
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