User manual

Page 20
EA Elektro-Automatik GmbH
Helmholtzstr. 31-33 • 41747 Viersen
Germany
Fon: +49 2162 / 3785-0
Fax: +49 2162 / 16230
www.elektroautomatik.de
[e-mail]
PS 5000 A Series
1.9.4.2 Rotary knobs
As long as the device is in manual operation, the two rotary knobs are used to adjust set values. For a detailed
description of the individual functions see section „3.4. Manual operation“. Both rotary knobs have an additional
pushbuttonfunctiontoswitchtheadjustmentmodebetweenne(displayshowFine) and coarse adjustment. Both
knobs can switch both modes. See 3.4.3 for details.
Coarsemodemeanstoalwaysincrementordecrementanyvalueby1,whilenemodeisconnectedtothelast
decimal place (see table in 1.9.4.3).
1.9.4.3 Resolution of the displayed values
All adjustable values have 4 digits. The number of decimal places depends on the device model. Actual and set
values related to the same physical unit always have the same number of digits.
Adjustment resolution and number of digits of set values in the display:
Voltage, OVP Current, OCP Power, OPP
Nominal
Digits
Increment Nominal
Digits
Increment Nominal
Digits
Increment
40 V / 80 V 4 0.01 V 2 A / 4 A / 5 A 4 0.001 A 160 W 4 0.1 W
200 V 4 0.1 V 10 A / 20 A 4 0.01 A 320 W 4 0.1 W
40 A 4 0.01 A 640 W 4 0.1 W
In manual operation every set value can be set in the increments given above. In this case
the actual output values set by the device will lie within percentage tolerances as shown in the
technical data sheets. These will inuence the actual values.
1.9.5 USB port (rear side)
TheUSBportonthebacksideofthedeviceisprovidedforcommunicationwiththedeviceandforrmwareupdates.
The included USB cable can be used to connect the device to a PC (USB 2.0, USB 3.0). The driver is delivered
on the included USB stick or is available as download and installs a virtual COM port. Details for remote control
can be found in external documentation, a general programming guide, on the web site of the manufacturer or on
the included USB stick.
The device can be addressed via the USB port using the international standard ModBus protocol.
1.9.6 Sense connector (remote sensing)
If the output voltage has to be dependant on the consumer location rather than the DC output of
the power supply, then the input “Sense” can be connected to the consumer where the DC con-
nection is made. This compensates, up to a certain limit, the voltage difference between the power
supply output and the consumer, which is caused by the high current through the load cables.
The maximum possible compensation is given in the technical data.