ES150 DELTA ELEKTRONIKA BV
rev. March 2017 DESCRIPTIONS Page 3 - 1
fig. 3 - 1
The out put ranges.
Ev ery point in hatched area can be used
DESCRIPTIONS
1) OUT PUT
The ES015-10, ES030-5, ES075-2 and ES0300-0.45 can ei ther be
used as a con stant volt age source with cur rent lim it ing or as a con -
stant cur rent source with volt age lim it ing.
The change of mode oc curs sharply at the cross ing of the volt age
and cur rent set tings. Fig. 3 - 1 shows the out put ranges.
° OVER LOAD PRO TEC TION
The power sup ply is fully pro tected against all over load con di tions,
in clud ing short cir cuit.
2) IN PUT VOLT AGE
The power sup plies have a wide in put volt age range.
° The units can also be used as a DC/DC con verter.
3) IN PUT CUR RENT
The units have ac tive power fac tor cor rec tion (PFC). The in put cur -
rent will there fore al most be a sine wave. This means that the
rms-value and the har monic dis tor tion of the in put cur rent will be rel -
a tively low.
4) EFFICIENCY
The ef fi ciency is very high and con stant over a wide out put cur rent
range. High ef fi ciency also means low power loss and low heat gen -
er a tion.
5) CV REG U LA TION
The CV-load reg u la tion should be mea sured di rectly on the out put
ter mi nals (see fig. 3 - 2). A few cm of ca ble can have a volt age drop of
sev eral mV (at high cur rent!).
6) CC REG U LA TION
For ac cu rate CC-load reg u la tion, the op tional ex ter nal volt age sens -
ing is not recommended.
7) RIP PLE & NOISE
The out put rip ple is very low with al most no spikes. The rip ple volt -
age has to be mea sured di rectly on the out put ter mi nals us ing a
probe with very short con nec tions (to avoid pick up of mag netic
fields) (see fig. 3 - 3).
Note:
to get re li able re sults, the back ground noise level should be
lower than the out put rip ple.
8) PRO GRAMMING IN PUTS
The out put volt age and cur rent can be pro grammed by an ex ter nal
an a log volt age. This pro gram ming is very ac cu rate and lin ear. The
lev els are all stand ard ised on 5V.
The in puts have a pro tec tion cir cuit formed by a se ries re sis tor and a
par al lel zener (see fig. 3 - 4). The ca pac i tor lim its the speed to a safe
value. Note that the an a log in puts (and out puts) are not float ing,
but the com mon is con nected to the neg a tive out put ter mi nal.
Wrong con nec tion of Ø can cause earth loops which can trip the
fuse. Af ter re mov ing the fault, the fuse will re set (PTC-fuse). To pre -
vent earth loops, use iso lated pro gram ming with the ISO AMP
MOD ULE (δ-prod uct).
The pro gram ming mode (pro gram and man ual) can be se lected at
the rear panel.
9) Ethernet / IEEE488 / RS232 PRO GRAMMING
The Delta Elektronika PSC-ETH and PSC-232 con trol lers can be
built in side the unit. The pro gram ming con nec tor on the power sup -
ply is com pat i ble with the ex ter nal in ter face PSC-488 module.
Volt age and cur rent can eas ily be pro grammed and read back. Also
all the sta tus out puts can be read by the com puter.
ES 0300-0.45
ES 075-2
ES 015-10
ES 030-5
fig. 3 - 2
Mea sur ing CV-reg u la tion
fig. 3 - 3
Mea sur ing rip ple voltage
fig. 3 - 4
Pro gram ming in puts
(in ter nal cir cuit)