IQ plus 810 - Rice Lake Weighing Systems

WIRING SETPOINT OUTPUTS & DIGITAL INPUTS - J4 (Main Board)There are four standard digital outputs on terminal J4 on the main board designed primarily to be switchclosureoutputs used for controlling relays operating other equipment. Each output is an open-collectorcircuit capable of sinking 250mA when “ON”, and withstanding +40 VDC when “OFF”. In addition, resistorpull-ups to +5 V are provided, making the outputs capable of driving TTL or 5V CMOS logic directly withoutthe need for any additional circuitry. The logic levels are active low (i.e., a TTL low level indicates the outputin “ON”, and a TTL high level indicates the output is “OFF”).In addition to the four digital outputs, there are three standard digital inputs on the same terminal blockconnector. The inputs are intended to be used as duplicate keyboard functions, or to enable and start batchsequences. Each input has an internal pull-up to +5 V and is intended to interface to a single-throw switchbut can also be connected to TTL or 5V CMOS logic. As with the digital outputs, the three digital inputs useactive low logic levels to represent the “ON” state.Connector (J4)Digital I/OJ4-1 DIG OUT 1J4-2 DIG OUT 2J4-3 DIG OUT 3J4-4 DIG OUT 4J4-5 DIG IN 3J4-6 DIG IN 2J4-7 DIG IN 1J4-8 GNDJ4-9 GNDJ4-10 NCBATTERY INSTALLATIONThe IQplus 810 requires a 4.5V Mercury Battery Assembly to maintain the real-time clock and to protect thesystem RAM when the unit is not connected to the line. The battery holder is located on the component sideof the display/power supply board. A battery clip is also provided to help hold the battery in place. Batterylife is estimated to be approximately three years. As a general service item, this battery should be replacedevery two years.CAUTION: Battery replacement MUST be done with AC power applied to the unit. If the battery isremoved without AC power applied, important configuration parameters may be lost from thesystem memory.REMOTE SWITCH FOR ACCESSING THE SUPERVISOR SWITCH MODEThis is normally a keyed remote switch toRemove the existing jumper connecting theprevent unauthorized tampering with setpointtwo J8 terminals furthest from SW1 (Setupparameters. The switch must be wired to J8Switch). Connect the remote switch wires toon the main board. When shipped, J8 will bethe two terminals closest to SW1 usingjumpered as below.appropriate connectors.SW1SW1Remote switch wiringJ8J84 - 8