SM3000 DESCRIPTIONS
rev. February 2018 DELTA ELEKTRONIKA B.V. Page 3 - 3
fig. 3 - 9
Lo ca tion of out put ter mi nals and an a log prog. con nec tor on rear panel
fig. 3 - 10
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
ta ble 3 - 1
Out puts on pro gram ming con nec tor
11) STATUS OUT PUTS
The sta tus out puts have an open out put volt age of 5 V and a short cir -
cuit cur rent of 10 mA. This makes it pos si ble to drive di rectly: an
opto-coupler, a TTL gate or a CMOS gate (put leak age re sis tor to Ø).
12) RE MOTE SHUT DOWN
A volt age of +5V on the Re mote Shut Down in put on the pro gram ming
con nec tor 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 si ble to use a re lay con tact or a switch to shut down the
unit: con nect a switch be tween Vref and Rem. Shut Down (pin 9 and 5).
Note: The Re mote Shut Down will also cause the OVP-led to burn and
the OVP-sta tus will be high.
13) PRO GRAMMING SPEED
The re sponse time is mea sured with a step wave form at the CV prog.
in put. Pro gramming from a low to a high out put volt age is nearly load
in de pend ent, but pro gram ming down to a low volt age takes more time
on lighter loads. This is caused by the out put ca pac i tors, which can
only be dis charged by the load be cause the power sup ply can not sink
cur rent.
When hav ing a sup ply with a fast pro gram ming op tion, the re sponse
is 5 to 25 times faster (see datasheet). When us ing fast pro gram ming it
is gen er ally not rec om mended to use re mote sens ing or se rial / par al lel
op er a tion. Con sult fac tory for ad vice. Also the output rip ple is higher.
fig. 3 - 11
External potmeters
pin de scrip tion
1 Ø, re turn of ref er ence, prog. in puts and
mon i tor out puts.
2 cur rent mon i tor out put (0 - 5V)
3 cur rent pro gram ming in put (0 - 5V)
4 CC sta tus out put, logic 1 = CC mode
(5 V / 10 mA)
5 Re mote ShutDown
6 PSOL sta tus out put (op tional)
7 +12 V out put (Ri = 500 Ohm)
8 Ø, re turn of sta tus out puts, +12 V and
re mote ShutDown
9 ref er ence volt age 5.1 V
10 volt age mon i tor out put (0 - 5V)
11 volt age pro gram ming in put
(0 - 5V)
12 NC
13 OVP sta tus out put, logic 1 = OVP mode
(5 V / 10 mA)
14 Ø, re turn of PSOL (op tional)
15 NC
fig. 3 - 12
Con nec tions AN A LOG PROG. CONN.
To Next Page
Loading...
Need help?
General
