The U
DC
has a capacitance of 2,2 uF which can give problems with some micro-controller power supply.
Danfoss has designed a special resistance supply and control cable to eliminate this problem.
Warning
PVEM is not PLUS+1 compliant.
ATEX PVE
The Danfoss PVE ATEX portfolio has the same monitoring and control characteristics as the equivalent
standard PVE.
PVEU–PVE with fixed control signal range
The PVEU (PVE 0-10V) is designed for PLC/ microcontroller(uC) control hence the U. The control signal U
S
is fixed 0 V to 10 V independent of supply voltage U
DC
.
Signal voltage - PVEU
Function Signal voltage PVEU
Neutral 5 V
Q: P → A 5 V → 2,5 V
Q: P → B 5 V → 7,5 V
PVE controlled with PWM signal
The standard PVE, PVEA/M/H/S, can also be controlled by a pulse with modulated PWM signal.
The V1 and V2 for PWM must be symmetrically located around U
DC2
and V1≤ U
DC
.
Duty cycles for PVEA/PVEM/PVEH/PVES/PVEU
Function Duty cycle (dc) for PVEA/PVEM/PVEH/PVES/PVEU
Neutral 50% dc
Q: P → A 50% dc → 25% dc
Q: P → B 50% dc → 75% dc
Recommended PWM frequency for PVE
PVE type PWM frequency
PVEM > 200 Hz
Technical Information PVE, Series 4 for PVG 32/100/120 and PVHC
PVE control
26 520L0553 • Rev GD • Jan 2014
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