CPS-EP3000(R2) MANUAL
Camtec Power Supplies GmbH - Gewerbestrasse 30 - DE-76327 Pfinztal / Germany
P.10/19 (01/2018.01.1)
Tel. +49 (721) 46596 - 0 Fax +49 (721) 46596 - 77
www.camtec-gmbh.com
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(Subject to alterations. This product is not designed to be used in applications such as life support systems wherein a failure or malfunction could result in injury or death)
Over Load Behaviour
The CPS-EP changes from the standard operation mode into the high current mode when high and quick
overload occurs. Thus, it provokes a restart after a 30ms break and delivers continuous current to the output.
This special behaviour is a protection for the power supply and for the connected load.
Inhibit / Interlock (INH)
The power supply is equipped with a control input Inhibit (INH)
to interlock a DC-shutdown of the power supply.
For the nominal operation of the power supply the connections
of the control input "INH" must always be short-circuited.
The power output is switched off as soon as the connection
between the contacts of the control input INH is interrupted.
If Inhibit is repealed, the power supply starts with a delay of
35ms. Using the softstart the current and the voltage rises
within 100ms continuously to the default set values. Between
the INH contacts applies a current of typical 2mA.
! Warning against damage in case of incorrect connection assignment
Never apply any external voltage to the control input INH. Never connect a resistor to the INH interface. The
INH can only be connected to a floating contact (e.g., mechanical switch or relay). Between control input INH,
and power output is a reinforced Isolation of max. 400Vdc and a basic isolation of max. 600Vdc working
voltage.
DC-OK Relay (DC Power Good)
The signal DC OK has potential-free relay contacts (changeover). The contacts of CON1 Pin2 and CON1 Pin4
are closed (relay coil is energized) when the power operates as a connstant voltage source. The contacts
CON1 Pin2 and CON1 Pin4 are open when the power output is inhibited by SD, INH, OT, FF, OVP, OCP or a
defective PFC. Contact load (resistive load): 30Vdc/1A, 60Vdc/0.3A, 30Vac/0.5A. Betwenn the intermediate
relay contact and the power output is a reinforced Isolation of max. 400Vdc and a basic isolation of max.
600Vdc working voltage.
AC-OK Relay (AC Power Good)
The Power Good relay reports whether the input voltage is too low or missing. The notification signal AC OK is
generated with potential-free relay contacts (changeover).
The contacts of CON1 Pin1 and CON1 Pin3 are closed (relay coil is energized) when the input voltage is higher
than typ. 175Vac or 210Vdc (switch-on). The contacts of CON1 Pin5 and CON1 Pin3 are closed (relay coil is
not energized) when the input voltage is lower than typical 165Vac or 145Vdc (turn-off). Contact load (resistive
load): 30Vdc/1A, 60Vdc/0.3A, 30Vac/0.5A.
Between the relay contacts and the output power is a reinforced isolation of max. 400Vdc and a basic isolation
of max. 600Vdc working voltage.
Over Voltage Protection Signaling (OVP)
If an over-voltage occurs to the output (for example, defective components, external feed voltage), it is followed
by the shutdown of the power output. A periodic restart attempts (ticker operation period 1s). The LED OVP
lights red.
Over Temperature Shutdown (OT)
The alarm signal OT is high when the temperature of the power supply is higher than the over-temperature
protection threshold. Output Open Collector I
MAX
=10mA, V
LOW
≤
0,6V, V
MAX
=30V.
