PHOTOHEAD PH50, PH51

Overview

The Photohead is the sensor in an EPC (Edge Position Control) system. It uses photoelectric principles to detect the edge of the strip (web). The sensor signal is transmitted to an amplifier. The amplified output signal is sent to a hydraulic jet pipe-type regulator or a servo valve and the strip edge is controlled so that it remains in the determined position. If the Photohead will be used in an environment where it will be exposed to dust, or if there is the risk that oil or water droplets could fall onto the Photohead projector lens, please use a sensor that has a guard or an air purge.

Specifications

Power supply	Supplied from the LED dimmer unit (Power supply to the LED dimmer unit: DC 10 V 1 A (Max.)
Output	A voltage (mV) in proportion to the change in light on the silicon light-detecting elements
Sensitivity	Detects a strip (non-transparent web) displacement of 0.1 mm
Air purge air consumption	400 Nℓ/min (at 0.05 MPa)
Allowable back pressure within the case	0.05MPa
Paint color	Silver
Ambient temperature	-10 to ＋60℃
Effective detection length	20mm
Body material	Cast aluminum alloy
Light source	White LED 3 W
Mass	PH50: 3 kg PH51 : See below

Mass of PH51

Model	V	W	X	Y	Z	MASS(kg)
PH51-3	300	200	270	540	554	31
PH51-4	400	200	320	640	654	33
PH51-5	500	200	370	740	754	36
PH51-6	600	200	420	840	854	38
PH51-7	700	400	470	940	954	40
PH51-8	800	400	520	1040	1054	42
PH51-9	900	400	570	1140	1154	44

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