PUMP PROTECTOR
The March May Pump Protector system is based around the APM 110E Power Monitor with an optional LED display Unit. The system works by measuring the power absorbed by the pump in order to protect it from damage or to provide warnings of system problems and inefficiencies. The basic principle is a comparison between the actual kW consumption with a pre-defined value based on the expected requirement of the pump at the duty point or that set at time of installation. The APM 110E is extremely easy to install and to set up and can be used on it's own. The addition of the D10 Display unit gives more detailed information to help improve system efficiency and early warnings of potential problems.
APM 110E
DIAGNOSTIC TABLE
Problem SG of liquid too high Liquid viscosity too high Increase in pipe discharge friction Running dry Starved inlet Insufficient NPSH avalable Seized pump head Shut discharge valve Centrifugal Over Power Over Power Under Power Under Power Under Power Under Power Under Power Under Power Positive Displacement Over Power Over Power Over Power Under Power Under Power Under Power Under Power Over Power
PCU D10
TECHNICAL DETAILS
APM 110E Monitor
Mounting: Terminals: M36 for 35mm DIN rail CT dim: Max 10 mm lead-in Max 16 A. Max 2,5 mm2 Use 60/75 copper (CU) wire only Terminal tight torque: 7lbs/in, 0,79Nm 1x120VAC or 1x230VAC ± 10% 3x230 to 3x575VAC Internal max. 0-80 A, Ext. N/5A C.T. Max 80 kW using internal current sensor 0.2-1 50 / 60 Hz. 3VA 250 VAC/5A. +8-30VDC Galvanic isolated 0-10VDC, for test only Ext. DSP output: 10V/50mA max
PCU D10 Display
Mounting: Panelmounting Cut-out: 68 x 68 mm 10Vdc (From APM110) Cable length: max 50m <1VA 12-30v DC 1) lout. 4-20mA (Passive) Supply: 15-30V dc Max Load (15Vdc) :136? Max Load (30Vdc) :818? 2) lout. On/Off (Passive) Off=1mA On=22mA
Supply: Consumption: Control Inputs: Analogue Output:
Supply: Voltage Range: Current range: Power range: Cosrange: Frequency range: Consumption: Relay spec.: Control inputs Reference output
DIMENSIONS
Dimensions in mm. Not to scale. Specifications are subject to change.
APM 110E
PCU D10
71
99
72
56 72 70
19/09/2012
March May Ltd, Howard Road, Eaton Socon, St Neots, PE19 8NZ, UK Tel: +44 (0) 1480 214444 Fax: +44 (0) 1480 405336 E-Mail: [email protected] Website: www.marchmay.co.uk