YZ DHA52 Technical data

1

Product Description Ordering Key

DHA52 is a fully pro­grammable timer to allow
execution of self-designed
timing functions. The func­tion 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 suit­able 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

)µ

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 106operations
Electrical life ≥ 10

5

operations

(at 5 A, 250 V, cos ϕ = 1)

Operating frequency < 7200 operations/h
Dielectric strength

Dielectric voltage 2 kVAC (rms)
Rated impulse withstand
voltage 2.5 kV (1.2/50 µs)

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

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 +60°C, R.H. < 95%
Storage temperature -30° to +80°C, 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 Ye s
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 Com­puter allows complete pro­gramming 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 per­sonal computer.

BHF software: to be
downloaded from the
CARLO GAVAZZI site fol­lowing the links for soft­ware download.
See the website
www.carlogavazzi.com/ac

Accessories

Mode of Operation

With DHA52 it is extremely
simple to obtain self­designed timing functions
just preparing two diagrams
with the PC configuration
sofware BHF: one describ­ing what happens at power
on and one at the trigger
(closing or opening). This
allows a variety of applica­tions 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-cus­tomized 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 infor­mation.

Example:

Setting a 3-blinks function
plus a start activity.
As soon as the power sup­ply 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 posi­tion of the front knob, that
can be set just in time. Clos­ing the trigger contact caus-

es the three 1 s pulses. In
every case, after finishing
the planned sequence, the
unit waits for the new trig­ger. In case of trigger event
before finishing the power
on sequence, the trigger
sequence starts.

Additional load

It's possible to wire an addi­tional 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 repro­grammed (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 func­tions using DHA52.

67.2

18.7

45

17.5

81

2

Dimensions