Input/Output Module Specifications of the CS7X™ Distributed Control System

Field Input/Output		Digital Input		Digital Output		Analog Input		Analog Output
		DIM1-6U	DIM1-D	DOM1-6U	DOM1-D	AIM1-6U	AIM1-D	AOM1-6U	AOM1-D
Number of Inputs or Outputs	32 per node, 64 per module
	32 per module
	16 per node, 32 per module
	16 per module
	8 per node, 16 per module
	8 per module
Input Type	32-curr., 32-Volt, 16-RTD, 28 thermocouple, & 1 cold junction temp.
	16-curr., 16-Volt, 8-RTD, 14 thermocouple, & 1 cold junction temp.
Output Type	Up to 2-Amps continuous, 1-mA leakage open circuit
	0- to 25-mA, isolated and floating
	0- to 5-V, single-ended, ground referenced, 1-KOhm impedance
Input Contact Type	Mechanical contacts or open-collector transistor switch, dry contact type
Output Contact Type	Form “A” solid-state switch dry contact
Input Voltage Range	Current: 0- to 25-mA, Voltage: 0- to 5-V, RTD: 100-Ohm to 1-KOhm, 0.385-Ohms/ºC 3-wire type, all thermocouple types supported, loop power is current limited
Output Voltage Range	Open: 60-Vdc max. circ. working volt., closed: 1-V drop across output
Wetting	Nominal 12- to 24-Vdc per system configuration
Open Circuit Voltage	Open circuit indicates “OFF”/0
Closed Circuit Current	3-mA controlled constant current, closed circuit indicates “ON”/1
Protection	Complies with C37-90.1 (IEEE 472)
Common Mode Rejection	Nominal 100-dB
Isolation	3750 VRMS optical isolation
Field Load and Contact Operation Sensing	Open output switch: leakage curr. of 1-mA through optical coupler allows sensing load presence; Closed output switch: sense voltage shorted out and closed contact state is sensed
Voltage Drop in Loop	5-Vdc
Current Output	4- to 20-mA nominal
Offset Zeroing	0 produces 4-mA ±1 count self-calibrated
Gain Error	4095 ± 5 counts produces 24 mA with no adjustments
CPU		Digital Input		Digital Output		Analog Input		Analog Output
		DIM1-6U	DIM1-D	DOM1-6U	DOM1-D	AIM1-6U	AIM1-D	AOM1-6U	AOM1-D
Micro-controller	Siemens C505C 8-bit processor
Processor Speed	Crystal frequency 16-MHz
Watchdog Timer	Internal
Memory Resources	288-K Flash, 8-K SRAM
	128-Bytes EEPROM
Physical Form	6U rack mount
	DIN rail mount
Points per Module	64 points on 2 nodes
	32 points on 2 nodes
	32 points on 1 node
	16 points on 2 nodes
	16 points on 1 node
	8 points on 1 node
Terminations	Mass termination cable
	Screw terminal
Power Consumption (per node)	10- to 32-Vdc nominal 0.54-Watts
	10- to 32-Vdc nominal 1.2-Watts
Loop Power (per node)	160-mA max.
	192-mA max.
	320-mA max. (all channels at 20-mA)
	640-mA max. (all channels at 20-mA)
Dimensions	Euro 6U height slides into 10.5”x19” rack chassis, 1.5” W
	6.5”L x 3.3”W x 2.8”H
LED Status Indicators	Input status one per unit
		64	32
	Display of desired logic and current output state for each channel
	Comm. channel, I/O module PCM activity, & diagnostic/fault indication
Environmental		Digital Input		Digital Output		Analog Input		Analog Output
		DIM1-6U	DIM1-D	DOM1-6U	DOM1-D	AIM1-6U	AIM1-D	AOM1-6U	AOM1-D
Oper./ Storage Temp.	-40º to +85ºC (-40º to +185ºF)
Humidity	100% non-condensing
Conformal Coating	Standard
Communications		Digital Input		Digital Output		Analog Input		Analog Output
		DIM1-6U	DIM1-D	DOM1-6U	DOM1-D	AIM1-6U	AIM1-D	AOM1-6U	AOM1-D
Sync	PCM sends marker message once-per-second which synchronizes I/O modules to the same 1-ms mark
Dual CAN Comm.	Two CAN network channels are accessible to the I/O module
User Configuration		Digital Input		Digital Output		Analog Input		Analog Output
		DIM1-6U	DIM1-D	DOM1-6U	DOM1-D	AIM1-6U	AIM1-D	AOM1-6U	AOM1-D
Accessibility	All user configurable parameters specified are accessible via CAN communications and are accessible from the host level
Debounce	User selects how many contiguous samples must agree before recognition of change
COS Report	User selects which edge of COS produces CAN message
Accumulator Count	User selects which edge produces an accumulator count
Accumulator Report	User selects a pre-scale value and a modulus
Signal Processing		Digital Input		Digital Output		Analog Input		Analog Output
		DIM1-6U	DIM1-D	DOM1-6U	DOM1-D	AIM1-6U	AIM1-D	AOM1-6U	AOM1-D
Sampling Rate	Digital or analog inputs are sampled each 1-ms
Resolution	24-bit
	12-bit
Input Filtering	60-Hz notch @ 7.5 samples/ second
Input Contact Debounce	Configurable on per point basis, can set up to 250-ms
Input Contact Extraneous Transitions	Debounce characteristic is user configurable per point, defines number of contiguous samples that must agree before new state of input accepted
Debounce Conf. Status Signals	Up to 250-ms can be set for very unstable sources
Debounce Upper Freq. Cut-Off	When conf. with zero debounce max. rate-per-point is 250-Hz, 50% duty cycle
Change of State (COS) Reporting	User configurable for reporting change immediately for:
	OFF to ON; ON to OFF, BOTH, NEITHER
Accumulator - 16-bit, 24-bit with Pre-scale	Each point user configurable for counting input changes:
	Max. rate of 250-Hz
	OFF to ON; ON to OFF; BOTH; NEITHER
Accumulator Report	Each accumulator has conf. pre-scale & modulus values
Accumulator Pre-scale	A configurable pre-scale value allows for dividing the raw counts by 1 to 256 before they appear in the accumulator
Latched Output	Maintains the last commanded status while power is applied
	When power is interrupted & returned, module ladder logic can be conf. for returning to last or a pre-defined default state
Retentive Output	Output state is retained/reset as configured in module fail sequence logic when power is lost
Pulse Output	If not conf. for hardware SBE, each point is conf. for activation between 10- to 655,350-ms
Duty Cycle Output (PWM)	Each point is conf. for activation in repeating cycles & duration from 10- to 10,000-ms
Output Update Rate	All outputs are updated every 10-ms
Report Processing		Digital Input		Digital Output		Analog Input		Analog Output
		DIM1-6U	DIM1-D	DOM1-6U	DOM1-D	AIM1-6U	AIM1-D	AOM1-6U	AOM1-D
Report by Exception	Data reported when input exceeds per point conf. dead band
Report on High High, High, Low, & Low Low	Exception reports are generated when crossing any of these four thresholds
Periodic Report	Data reported on min. interval conf. by user regardless of data change
Rate Processing		Digital Input		Digital Output		Analog Input		Analog Output
		DIM1-6U	DIM1-D	DOM1-6U	DOM1-D	AIM1-6U	AIM1-D	AOM1-6U	AOM1-D
Rate Report	With the accumulator report, time between pulses & number of pulses-per-second are each reported
Alarm Report Accumulator Rate Maximum	Maximum frequency or minimum period
Alarm Report Accumulator Rate Minimum	Minimum frequency or maximum period
Module Failsafe Logic		Digital Input		Digital Output		Analog Input		Analog Output
		DIM1-6U	DIM1-D	DOM1-6U	DOM1-D	AIM1-6U	AIM1-D	AOM1-6U	AOM1-D
Control Sequence on Comm Failure	DOM loss of comm. less than 14 sec., then alarm & pre-programmed shutdown