Chapter 7:IQ 250/260 Meter Using the I/O Option Cardswww.eaton.com IB02601006E 7-920mA Output Card (IQ250/260-IO4)The 20mA card transmits a standardized 0-20 mA signal. This signal is linearly proportional to real-time quantitiesmeasured by the IQ 250/260. The current sources need to be loop powered. The outputs are electrically isolatedfrom the main unit.SpecificationsThe technical specifications at 25° C at 500Ω load are as follows:Number of outputs: 4 single endedPower consumption: 1W internalSignal output range: (0 to 24)mAMax. load impedance: 850 Ω @ 24VDCHardware resolution: 12 bitsEffective resolution: 14 bits with 2.5kHz PWMUpdate rate per channel: 100msOutput accuracy: ± 0.1 % of output range (24mA)Load regulation: ± 0.03 % of output range (24mA) load step of 200Ω @ 20mATemperature coefficient ± 300n A/°CIsolation: AC 2500V system to outputsMaximum loop voltage: 28Vdc maxInternal voltage drop: 3.4VDC @ 24mAReset/Default output value: 12mAThe general specifications are as follows:Operating temperature: (-20 to +70) °CStorage temperature: (-40 to +80) °CRelative air humidity: Maximum 95%, non-condensingEMC - Immunity interference: EN61000-4-2Weight: 1.6ozDimensions (inch) W x H x L: 0.72 x 2.68 x 3.26External connection: AWG 12-26/(0.129 - 3.31)mm25 pin, 0.200” pluggable terminal blockDefault Configuration:The IQ 250/260 automatically recognizes the installed option card during Power Up. If you have not programmed aconfiguration for the card, the unit will default to the following outputs:Channel 1+Watts, +1800 Watts => 20mA-Watts, -1800 Watts => 4mA0 Watts => 12mAChannel 2+VARs, +1800 VARs => 20mA- VARs, -1800 VARs => 4mA0 VARs => 12mAChannel 3Phase A Voltage WYE, 300 Volts => 20mA0 Volts => 4 mAPhase A Voltage Delta, 600 Volts => 20mAChannel 4Phase A Current, 10 Amps => 20mA0 Phase A Current, 0 Amps => 4 mA
