User manual

ManualsBrandsEA ELEKTRO-AUTOMATIK ManualsLaboratory & Bench PSUsEA-PS 8360-15 T, 1500W 1 Output Variable DC Power Supply, Switched Mode, Tower

Irrtümer und Änderungen vorbehalten

For coarse adjustment, following step widths apply in dependency

of the nominal values (also refer to technical specs):

Voltage Current

Nom. value Step width Nom. value Step width

16V 0.1V 4A 50mA

32V 0.2V 5A 50mA

65V 0.5V 10A 0.1A

80V 0.5V 15A 0.1A

160V 1V 20A 0.2A

360V 2V 40A 0.5A

60A 0.5A

Important! The resolution of the adjustable set values is, at some

models, higher than the one of the output voltage. Thus it can hap-

pen that the output voltage only changes every 2 or 3 steps.

2. Remote control by analogue interface

The analogue interface (AI) allows to remotely control current and

voltage, always in combination. It means, that it‘s not possible to

adjust voltage by the AI and the current with the rotary encoder on

the front at the same time, or vice versa. Because the OVP thres-

hold can not be adjusted via the AI, it‘s required to set it manually

on the device before using the remote control. Switching to preset

mode with the pushbutton Preset V/C/OVP shows the translated

set values, that are put into the set value pins of the AI as voltages.

In order to put in the appropriate set values, the user can either use

an external voltage or the reference output voltage on pin 3.

In case it is only required to adjust voltage by external means, the

current set value (CSEL) can be bridged to the reference voltage

(VREF).

The AI can be operated with the common 0...5V or 0...10V ran-

ges, each corresponding to 0...100% nominal values. The desired

voltage range is selected in the device setup (see section „Device

setup“). Following applies:

0-5V: Reference voltage = 5V, 0...5V set value voltage correspond

to 0...100% nominal value, 0...100% actual value correspond to

0...5V at the actual value outputs.

0-10V: Reference voltage = 10V, 0...10V set value voltage corre-

spond to 0...100% nominal value, 0...100% actual value correspond

to 0...10V at the actual value outputs.

Putting in set values that exceed the limit, for example >5V while the

0...5V range is selected, is intercepted by clipping the concerning

set value to 100% .

Never input voltages higher than 12V to the set value inputs!

3. Remote control by digital interface

The digital interfaces allow to set voltage and current, as well as

the OVP threshold by means of a PC. When changing to remote

control mode, the device keeps the last set values until they‘re

altered. Hence it would be possible to control only voltage by sen-

ding arbitrary set values and the current set value would remain

unaltered.

Set values given by the digital interface (except GPIB) are always

percentage and correspond at 100% (hex: 0x6400), resp. at 110%

(hex: 0x6E00) for the OVP threshold, to the nominal values of the

device.

Furthermore, the digital interfaces allow to query and set a lot

of other features and values. For details refer to section „Digital

interface cards“ and the user manual of the IF cards.

7. Behaviour when...

7.1 Switching on by power switch

The power switch is located at the rear. After switching the device

on it is immediately ready to work. In the device setup (see section

„Device setup“) is an option named „P on“, which stands for auto

power on, that determines the state of the power output when the

device is switched on. By default, this is option is set to on, meaning

that the device will save the last output condition, including the set

values, when it is switched off by the power switch and restore the

condition after the next start.

If the option is set to „off“, the set values of U and I are set to 0 and

the output is switched on after the next start.

7.2 Switching off by power switch

Switching the device by power switch is handled as mains blackout.

The device will save the last set values and output condition. After

a short time, power output and fan will be switched off and after a

few seconds more, the device will be completely off.

7.3 Switching on or off by standby button

Same behaviour as when switched on or off by power switch. The

condition is restored or not, according to the setting „P on“ in the

device setup.

7.4 Switching to remote control

a) Analogue interface: Pin „Remote“ switches the device to remote

control, done via the set values pins VSEL and CSEL, as well as

REM-SB. The output condition and the set values which are put

into pins 1, 2 and 13 (also see section „Analogue interface“) are

immediately set. After return from remote control into manual con-

trol, the output will be switched off and the last remotely adjusted

set values of U and I are kept.

b) Digital interface: Switching to remote control by the corresponding

command (here: object) keeps output state and set values until

altered. Returning from remote control switches the output off and

the last, remotely adjusted set values of U and I are kept.

7.4 Overvoltage occurs

An overvoltage error can occur due to an internal defect (output

voltage rises uncontrolled) or by a too high voltage from external.

The overvoltage protection (OVP) will switch off the output and

indicate the error by the LED „OVP“.

External voltages higher than 120% nominal voltage at the

output must be avoided, or else internal components of the

device might be destroyed!

If the cause of the overvoltage is removed, the output can be swit-

ched on again and the LED „OVP“ will go out. In manual operation,

this is done by pushing button Output On and in analogue remote

control with pin „REM-SB“. If the error is still present, the output

can not be switched on.

OVP errors are recorded as alarm into the internal alarm buffer.

This buffer can be read out via the digital interface.

Operating the device