Marathon Computer AACC 2000 manual Four terminal modules, Com, Dual output modules

	Marathon Monitors Inc.
Four terminal modules
Note:	Module 1 is connected to terminals 1A, 1B, 1C and 1D
	Module 2 is connected to terminals 2A, 2B, 2C and 2D
	Module 3 is connected to terminals 3A, 3B, 3C and 3D

Module type		Terminal identity			Possible functions
	A	B	C	D
lay: changeover					Heating, cooling,or
(2A, 264 Vac max.)					alarm,
DC control: Isolated	+	−			Heating, or cooling
(10V, 20mA max.)
24Vdc transmitter supply	+	−			To power process
					inputs
Potentiometer input		+0.5Vdc		0V	Motorised Valve
100Ω to 15KΩ					Position feedback
DC retransmission	+	−			Retrans. of setpoint,
					or process value
DC remote input or	0-10Vdc	RT source	±100mV	COM	Remote Setpoint
Process Value 2			0-20mA		Second PV
(Module 3 only)		(Refer to Fig. 1-8)
Dual output modules
Dual relay					Heating + cooling
(2A, 264 Vac max.)					Dual alarms
					Valve raise & lower

Dual Triac							Heating + cooling
(1A, 30 to 264Vac)							Valve raise & lower
	Line		Load	Line		Load
Dual logic + relay	+		−				Heating + cooling
(Logic is non-isolated)
Dual Logic + triac	+		−				Heating + cooling
(Logic is non-isolated)
				Line		Load
Triple logic input and output modules - see ratings on the next page
Triple contact input	Input 1	Input 2		Input 3	Common
Triple logic input	Input 1	Input 2		Input 3	Common
	Table 1-2 Four terminal module connections.

AACC 2000 Carbon 18 Nov. 1, 1997