Grundfos CIU 501 Instructions

English (GB)
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10.3 Alarms and warnings
In the WarningCode register, the cause of an E-pump warning
can be read. A warning has no influence on the E-pump
operation.
In the FaultCode register, the cause of an E-pump alarm can be
read. An E-pump alarm will always lead to a reaction in the
E-pump operation, usually the E-pump will be stopped, but some
alarms in some E-pump types have programmable alarm action
types.
The complete list of possible alarm/warning codes is shown
below. Not all codes apply to all E-pump types.
Address Name Description
00206 WarningCode Code for E-pump warning.
00205 FaultCode Code for E-pump alarm.
Code Alarm/warning description
1 Leakage current
2 Missing phase
3 External fault signal
4 Too many restarts
7 Too many hardware shutdowns
14 Electronic DC-link protection activated (ERP)
16 Other
30 Change bearings (specific service information)
31 Change varistor(s) (specific service information)
32 Overvoltage
40 Undervoltage
41 Undervoltage transient
42 Cut-in fault (dV/dt)
45 Voltage asymmetry
48 Overload
49 Overcurrent (i_line, i_dc, i_mo)
50 Motor protection function, general shutdown (MPF)
51 Blocked motor/pump
54 Motor protection function, 3 sec. limit
55 Motor current protection activated (MCP)
56 Underload
57 Dry running
60 Low input power
64 Overtemperature
65 Motor temperature 1 (t_m or t_mo or t_mo1)
67
Temperature too high, internal frequency converter
module (t_m)
70 Thermal relay 2 in motor (e.g. thermistor)
72 Hardware fault, type 1
73 Hardware shutdown (HSD)
76 Internal communication fault
77 Communication fault, twin-head pump
80 Hardware fault, type 2
83 Verification error, FE parameter area (EEPROM)
85 Verification error, BE parameter area (EEPROM)
88 Sensor fault
89 Signal fault, (feedback) sensor 1
91 Signal fault, temperature 1 sensor
93 Signal fault, sensor 2
96 Setpoint signal outside range
105 Electronic rectifier protection activated (ERP)
106 Electronic inverter protection activated (EIP)
148
Motor bearing temperature high (Pt100) in drive end
(DE)
149
Motor bearing temperature high (Pt100) in non-drive
end (NDE)
155 Inrush fault
156
Communication fault, internal frequency converter
module
161 Sensor supply fault, 5 V
162 Sensor supply fault, 24 V
163 Measurement fault, motor protection
164 Signal fault, Liqtec sensor
165 Signal fault, analog input 1
166 Signal fault, analog input 2
167 Signal fault, analog input 3
175 Signal fault, temperature 2 sensor
176 Signal fault, temperature 3 sensor
190 Limit exceeded, sensor 1
191 Limit exceeded, sensor 2
240 Lubricate bearings (specific service information)
241 Motor phase failure
242 Automatic motor model recognition failed
Code Alarm/warning description

Grundfos CIU 501 Specifications

General

Brand	Grundfos
Model	CIU 501
Category	Controller
Language	English