Model: WE 77/Ex-22-channelControl circuit EEx ia IIC115 V AC supply volta
geReversible mode of operationLead breaka
ge (LB) monitorin
g1 relay contact output (chan
ge-over contact) per channelSi
gnal type Di
gital InputConnection terminals 17, 18Rated volta
ge 103.5 ... 126 V AC , 45 ... 65 HzPower dissipation 2.5 WPower consumption approx. 3.2 VAInputConnection side field sideConnection terminals 1-, 2+; 8+, 9-Rated values acc. to EN 60947-5-6 (NAMUR), see system description for electrical dataOpen circuit volta
ge/short-circuit current approx. 8 V DC / approx. 8 mASwitchin
g point/switchin
g hysteresis 1.2 ... 2.1 mA / approx. 0.2 mAPulse/Pause ratio min. 0.5 ms / min. 0.5 msLine fault detection breaka
ge I ≤ 0.1 mAOutput Connection side control sideConnection terminals 10, 11, 12; 13, 14, 15Output si
gnal ; relayContact loadin
g 253 V AC/2 A/500 VA/cos φ min. 0,7; 125 V AC/4 A/500 VA cos φ min. 0,7; 40 V DC/2 A/80 W ohmic loadEner
gized/De-ener
gized delay approx. 10 ms / approx. 20 msMechanical life 107 switchin
g cyclesSwitchin
g frequency < 10 HzDisplay elements LEDsDe
gree of protection IEC 60529Ambient temperature -20 ... 60 °C (-4 ... 140 °F)Mechanical specificationsDe
gree of protection IP20Connection screw terminalsMass approx. 410
gDimensions 60 x 104 x 110 mm (2.4 x 4.1 x 4.3 inch).