SM1540-D SM7020-D SM3004-D DELTA ELEKTRONIKA BV
1989 rev. May 2008 DESCRIPTIONS Page 3 - 3
match the out put cur rent. This is mainly caused by the current through
the out put ca pacitors. Re mote sensing will worsen this ef fect.
11)
STATUS OUT PUTS
The status outputs have an open output voltage of 5 V and a short cir -
cuit current of 10 mA. This makes it pos sible to drive di rectly: an
opto-coupler, a TTL gate or a CMOS gate (put leak age re sistor to Ø).
12)
RE MOTE SHUT DOWN (RSD)
A volt age of +5 V on the Re mote Shut Down in put on the programming
connector will switch off the power cir cuit of the unit. In standby mode
the power sup ply con sumes very lit tle power.
It is also pos sible to use a re lay con tact or a switch to shutdown the
unit: connect a switch be tween Vref and Rem. ShutD. (pin 9 and 5).
Note: The Re mote Shut Down will also cause the OVP-led to burn and
the OVP-status will be high.
13)
PRO GRAMMING RE SPONSE TIME
The re sponse time is mea sured with a step wave form at the CV prog.
input. Programming from a low to a high out put voltage is nearly load
independent, but pro gramming down to a low voltage takes more time
fig. 3 - 10 Location of out put terminals, Sense Block, an alog prog.
con nector and PROG. / MAN. switches on rear panel
(SM3004-D has no sense block).
fig. 3 - 11
Buf fered mon i tor out puts (in ter nal cir cuit)
Out put pin Ro Io max
Vref 9 15 Ohm 10 mA
Vmon 10 20 Ohm 10 mA
Imon 2 20 Ohm 10 mA
+12V 7 500 Ohm 25 mA
Ø 1 1.2 Ohm
fig. 3 - 12 Outputs on pro gramming connector
pin
de scrip tion
1
Ø, re turn of ref erence, prog. in puts and
mon i tor out puts.
2
current mon itor output (0 - 5V)
3
current pro gramming in put (0 - 5V)
4
CC sta tus output, logic 1 = CC mode
(5 V / 10 mA)
5
Re mote Shut Down
6
M/S parallel, slave en able (only for
autoranging)
7
+12 V output (Ri = 500 Ohm)
8
Ø, re turn of sta tus outputs, +12 V and
re mote Shut Down
9
ref er ence volt age 5.1 V
10
voltage mon itor output (0 - 5V)
11
volt age pro gram ming in put
(0 - 5V)
12
PSOL sta tus output (op tional)
13
OVP sta tus output, logic 1 = OVP mode
(5 V / 10 mA)
14
NC
15
NC
fig. 3 - 13
Con nec tions AN A LOG PROG. CONN.
fig. 3 - 14 External potmeters
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