Grundfos CUE Series Service Instructions

Appendix
32
2.5 Block diagram, enclosures C1 to C4
Fig. 5 Block diagram, enclosures C1 to C4
TM04 2134 2008
P404/420 Block-Schematic, C1-4
Power, SMPS, Inrush / Current Sense
x 3
DC/AC
UDC+,BR+ BR-
o
C
Temp.
conv.
uC+ EEP
7 xGD
RL1
GD
Supply
A
BR GD
BR FB
INV GD
AC/DC
Thyristor x3
BR
(Load sharing)
RECT+ / RECT-
P_BRF
RL2 Inrush SAFE_FB Tmp_VGDS VCC
FAN
CAN
A
A
Imax2 comp.
RL2 RL1
Tmp_VGDS
P400 Block schematic ver. 1.00j updated 2007.09.06
Inrush
RFI_RL2
RFI_RL1
FFB
Int. fans
Confidential - property of Danfoss
”Internal supply bus”
”Internal Communication”
LCP
Opt. A Opt. B
Opt. C0+C1
Opt. D
Control Card
AOC
LCP con.
Std. bus
Isol. RS485 RS485 USB D-I/O A-I/O
Safe24V
MOC
Level
Shift
VCX (GX) 5V
VCC (GND) 5V
VDD (GND) 24V
SMPS
Motor
U
V
W
UINV_P
UINV_N
RFI_RL2
RFI_RL1
MAINS
RFI (variations)
L1 L2 L3
VDD (GND) 24V
Pulse
E_FAN
E_FFB
Ext. fans

Grundfos CUE Series Specifications

General

Category	DC Drives
Output Voltage	24 V DC
Control Signal	0-10 V, 4-20 mA
Communication	Modbus RTU
Protection Features	Overvoltage, overcurrent, overtemperature, short circuit
Humidity	5% to 95% (non-condensing)
Enclosure class	IP20
Enclosure Rating	IP20