Siemens PAD-4 Installation, Operation And Maintenance Manual

14PAD-4 Installation, Operation and Maintenance Manual2.6.4 Class A (Style Z) Input/Output NAC WiringFigure 2-13 shows how to wire for Class A (Style Z) input and output supervision. Use in/out wiringmethods for proper supervision. Note: MIN: 22 AWG, MAX: 12 AWG.Class A (Style Z) Output Notification CircuitsThe configuration shown in Figure 2-13 shows two, 3-amp devices wired as Class A (Style Z) circuits.When you are using the outputs as Class A (Style Z) circuits, loop the wiring back to the correspondingcircuit pair. For Class A (Style Z) wiring, no external EOL is necessary since it is built into the board.PAD-4-CLSA ModuleThe PAD-4-CLSA module provides connectivity to two circuits wired as Class A (Style Z). Refer to thePAD-4-CLSA Installation Instructions, P/N 315-050254, for more information.Class A (Style Z) Supervised Input CircuitsThe configuration shown in Figure 2-13 shows Class A (Style Z) supervised wiring from a fire alarmcontrol unit to the PAD-4 board. Pay close attention to the polarities when wiring the unit and followthese requirements:When wiring to terminal 1-, you must use two separate wires. Do not loop a single wire or twist twoconductor wires together.Do not use notification appliances on Class A (Style Z) circuits connected for input. The PAD-4 willdetect voltage across the input circuits, but is not designed to pass the added current load from notifica-tion appliances.TB111+ 1- 2+11 1TB12 TB13 TB14 TB15NAC3B NAC4B (NAC2A)_+ _+NAC1B NAC2B (NAC1A)_+ _+NC COM NONCCOM2- 21 11 1TB16AUX PWR SUPPLY_+DO NOT USEDO NOT USEDO NOT USENAC RATINGS:ALARM VOLTAGE: 24VDCMAX. ALARM CURRENT: 3AMAX. RIPPLE: 0.1 VACMAX. STANDBY CURRENT: 1.0mANOTIFICATION APPLIANCE CIRCUITSTYLE Z)SUPERVISED, POWER LIMITEDSEE SIEMENS P/N 315-096363 ORFARADAY P/N 315-096363FA FORCOMPATIBLE DEVICESPOLARITY SHOWN INACTIVATED CONDITION.CLASS A (+-+- INOUT24VDC/VFW7mA MAX.SUPERVISED BYFIRE ALARMCONTROL UNIT,POWER LIMITED-++ -NOTE: THIS CLASS USES2 NAC CIRCUITSNAC4A_+ _+NAC3A_+ _+TB1 TB2PAD-4-CLSA1 1INPUT 1 INPUT 2.Figure 2-13Class A (Style Z) Supervised Input/Output Connections