SIGNA MR355 / SIGNA MR360
Service Manual
5856356-3EN Revision 5.0
Basic Service Documentation. Copyright General Electric Company.
Object ID: 00000018WIA30414F20GYZ
Topic ID: id_13106896 Version: 1.1
Date: Jul 5, 2019 10:46:04 PM

Cabinet Monitor Design Specification

Overview

This document describes hardware design specification of the Cabinet Monitor, which is used in SV 1.5T MRI system.

Purpose

The Cabinet Monitor shall monitor the leakage from the cooling system, the temperature in the cabinet, water tank level and flow of the cooling system. The Cabinet Monitor shall drive relay driver, Emergency Stop, if necessary. The Cabinet Monitor shall communication with SCP via CAN.

Function Overview

Power Supply

Main Power Supply Switch ・・・Cabinet Monitor Main Power
Fuse ・・・M, 3A/250V, replaceable fuse folder

Interface

Cabinet Monitor Board has the following interfaces.

Leakage Sensor (2, 3)
- Leakage ・・・leakage signal input
- sensor fault ・・・sensor fault signal input
Temperature Sensor (1, 2)
- OUT1 ・・・temperature sensor out1 input
- OUT2 ・・・temperature sensor out2 input
Water Level Sensor ・・・Water Tank Level signal input
BRM PUMP Status ・・・BRM Pump Status signal input
Cabinet PUMP Status ・・・Cabinet Pump Status signal input
Standby Mode ・・・Standby Mode signal(RS422) input
CAN ・・・Board Control interface
E-off ・・・Relay control signal output (RelayDriver2)
Standby ・・・Relay control signal output (RelayDriver5)
Magnet Monitor Output ・・・Relay point output(Relay6)

Configuration

This main configuration of the Cabinet Monitor should consist of three power supplies (24V, 5V and isolated 24V for CAN), three leakage detectors, 6 relay drivers and 14 LEDs. The Cabinet Monitor can monitor leakage and sensor fault by each leakage detector, over temperature by two Temps Sensor (GEHC P/N 2184426), flow SW and tank level SW of Cooling Unit. The Cabinet Monitor can drive the 6 relay drivers. It has 14 Input ports for sensors. The Cabinet Monitor has a CAN communication port and supply 24V DC power, which can communicate with SCP by CAN.

The assemblies that make up the cabinet monitor are as follows.EMI filter: filter the input 120VAC power supply. AC-DC output power supplies( 120VAC to 24VDC, 120VAC to CAN 24VDC, 120VAC to 5VDC, and 5VDC to 3.3VDC) The sub-assemblies supply power for the whole cabinet monitor. Cabinet monitor control board: process the I/O signals and drive relay dirvers CAN Communication Core Board assembly: the channel of CAN communication with SCP Leak sensor Amplifier board (3 pieces): detect the leak sensors status, leakage and disconnection.

Figure 1. Block Diagram of the Cabinet Monitor Board

In this illustration, the Leakage Sensor1, Primary Trans, DCERD2 PS and LK1 LED SF1 LED are not used in SV system.

Electrical Specification

Power Voltage

The AC120V shall be provided from the Cabinet. The DC24V or DC5V switching power supply in the Cabinet Monitor shall provide DC24V or DC5V to the board, sensors, relays and CAN power. CAN power supply should be isolated from another power supply.

Figure 2. Block Diagram of the Power Supply

FG of the Power Supply shall be connected with the chassis and also each switching power supply shall be connected with the chassis by a frame or a spacer.

LED indicator

This table shows the LED indicators on the front panel.

Table 1. LED Indicator
Name	LED Color	Description
LK1	Red	Leakage Sensor1 Leakage (not used)
SF1	Yellow	Leakage Sensor1 Sensor fault (not used)
LK2	Red	Leakage Sensor2 Leakage
SF2	Yellow	Leakage Sensor2 Sensor fault
Lk3	Red	Leakage Sensor3 Leakage
SF3	Yellow	Leakage Sensor3 Sensor fault
L45	Red	Temperature Sensor1
L40	Yellow	Temperature Sensor1
R45	Red	Temperature Sensor2
R40	Yellow	Temperature Sensor2
DCERD	Red	DCERD Alarm (not used)
BRM Pump	Red	BRM Pump Alarm
Tank	Red	Water Level Sensor
Cabinet PUMP	Red	Cabinet PUMP Status

Connection with Interface

This section explains the interface connection of the Cabinet Monitor.

Leakage Sensor1(Mini Mete-N-Lok, 3pin) (not used)

Table 2. Leakage Sensor1 connection
Pin No.	Signal Name	Function	Signal Direction
1	Vtest-	Voltage negative of the leak sensor strip terminal	0 ~ 3.3V DC
2	NC	NC	NC
3	Vtest+	Voltage positive of the leak sensor strip terminal	0 ~ 3.3V DC

Leakage Sensor2(Mini Mete-N-Lok, 3pin)

Table 3. Leakage Sensor2 connection
Pin No.	Signal Name	Function	Signal Direction
1	Vtest-	Voltage negative of the leak sensor strip terminal	0 ~ 3.3V DC
2	NC	NC	NC
3	Vtest+	Voltage positive of the leak sensor strip terminal	0 ~ 3.3V DC

Leakage Sensor3(Mini Mete-N-Lok, 3pin)

Table 4. Leakage Sensor3 connection
Pin No.	Signal Name	Function	Signal Direction
1	Vtest-	Voltage negative of the leak sensor strip terminal	0 ~ 3.3V DC
2	NC	NC	NC
3	Vtest+	Voltage positive of the leak sensor strip terminal	0 ~ 3.3V DC

Temperate Sensor1, Left Cabinet

Table 5. Temperate Sensor1(Left Cabinet)
Pin No.	Signal Name	Function	Signal Direction
1	N.C.	-	-
2	VCC	DC5V	-
3	N.C.	-	-
4	VCC	DC5V	-
5	N.C.	-	-
6	OUT1	High : more than 40℃	Input TTL signal
7	GND	GND	-
8	OUT2	High : more than 45℃	Input TTL signal
9	GND	GND	-
10	-	-	-

Temperate Sensor2, Right Cabinet

Table 6. Temperate Sensor2(Right Cabinet)
Pin No.	Signal Name	Function	Signal Direction
1	N.C.	-	-
2	VCC	DC5V	-
3	N.C.	-	-
4	VCC	DC5V	-
5	N.C.	-	-
6	OUT1	High : more than 40±3℃	Input
7	GND	GND	-
8	OUT2	High : more than 45±3℃	Input
9	GND	GND	-
10	N.C.	-	-

BRM PUMP status(Mini Mete-N-Lok, 2pin)

Table 7. BRM PUMP status
Pin No.	Signal Name	Function	Signal Direction
1	BRM Pump Alarm signal	BRM Pump Alarm input signal	Input short/open signal (Normal open)
2	GND	GND	-

Water Level Sensor(Mini Mete-N-Lok, 3pin)

Table 8. Water Level Sensor
Pin No.	Signal Name	Function	Specification
1	-	-	-
2	Water Level Signal	Water Level input signal	Input short/open signal (Normal Open)
3	GND	GND	-

Cabinet PUMP Status(Mini Mete-N-Lok, 2pin)

Table 9. Cabinet PUMP Status
Pin No.	Signal Name	Function	Signal Direction
1	Cabinet PUMP Alarm signal	Cabinet Pump Alarm input signal	Input short/open signal (Normal open)
2	GND	GND	-

Standby Mode(D-sub 9pin, Receipt)

Table 10. Standby Mode
Pin No.	Signal Name	Function	Signal Direction
1	N.C.	Connection with CCC Board CAN connector 1pin	-
2	CAN_LOW	CAN_LOW line	Input/Output
3	GND	CAN GND	-
4	N.C.	Connection with CCC Board CAN connector 7pin	-
5		Connection with CAN2 connector 5pin	-
6	GND	CAN GND	-
7	CAN_HIGH	CAN_HIGH line	Input/Output
8	N.C.	Connection with CCC Board CAN connector 6pin	-
9	DC24V	DC24V	-

CAN1(D-sub 9pin, Receipt)

Table 11. CAN1
Pin No.	Signal Name	Function	Signal Direction
1	N.C.	Connection with CCC Board CAN connector 1pin	-
2	CAN_LOW	CAN_LOW line	Input/Output
3	GND	CAN GND	-
4	N.C.	Connection with CCC Board CAN connector 7pin	-
5	N.C.	Connection with CAN2 connector 5pin	-
6	GND	CAN GND	-
7	CAN_HIGH	CAN_HIGH line	Input/Output
8	N.C.	Connection with CCC Board CAN connector 6pin	-
9	DC24V	DC24V	-

CAN2(D-sub 9pin, Plug)

Table 12. CAN2
Pin No.	Signal Name	Function	Signal Direction
1	N.C.	Connection with CCC Board CAN connector 1pin	-
2	CAN_LOW	CAN_LOW line	Input/Output
3	GND	CAN GND	-
4	N.C.	Connection with CCC Board CAN connector 7pin	-
5	N.C.	Connection with CAN2 connector 5pin	-
6	GND	CAN GND	-
7	CAN_HIGH	CAN_HIGH line	Input/Output
8	N.C.	Connection with CCC Board CAN connector 6pin	-
9	DC24V	DC24V	-

Relay Drive (D-sub 15pin, Receipt)

Table 13. Relay Drive
Pin No.	Signal Name	Function	Signal Direction
1	Driver1 (+)	Relay1 control signal(+)	Output
2	Driver1 (-)	Relay1 control signal (-)	Output
3	Driver2 (+)	Relay2 control signal (+)	Output
4	Driver2 (-)	Relay2 control signal (-)	Output
5	Driver3 (+)	Relay3 control signal (+)	Output
6	Driver3 (-)	Relay3 control signal (-)	Output
7	Driver4 (+)	Relay4 control signal (+)	Output
8	Driver4 (-)	Relay4 control signal (-)	Output
9	Driver5 (+)	Relay5 control signal (+)	Output
10	Driver5 (-)	Relay5 control signal (-)	Output
11	N.C.	-	-
12	N.C.	-	-
13	N.C.	-	-
14	N.C.	-	-
15	N.C.	-	-

Magnet Monitor Out(Mini Mete-N-Lok, 2pin)

Table 14. Magnet Monitor Out
Pin No.	Signal Name	Function	Signal Direction
1	Relay point 1	Relay Signal	Output
2	Relay point 2	Relay Signal	Output

Board Electrical Specification

Power Voltage

The Switching Power Supply(VS10C-5) provide DC5V to the board and the Cabinet Monitor Board produces DC3.3V. The power voltage(DC5V,DC24V,CAN DC24V) shall be isolated and then provide to the each device.

LOGIC Power ・・・・・・・・・・・DC5V,DC3.3V,DC±12V
CAN Power ・・・・・・・・・・・DC24V
Leakage Sensor/Relay Power ・・・・DC24V

* DC±12V shall be isolated electrically

Connection

In this section, the following shows the connection with Cabinet Monitor Board.

Power Connector(J1)

Table 15. Power Connector
Pin No.	Signal Name	Function	Signal Direction
1	5V	DC5V	-
2	GND	GND(5V/3.3V)	-
3	N.C.	-	-
4	24V	DC24V	-
5	GND	GND(24V)	-

CAN Power Connector(J2)

Table 16. CAN Power Connector
Pin No.	Signal Name	Function	Signal Direction
1	GND	GND(CAN-24V)	-
2	N.C.	-	-
3	24V	DC24V	-

CCC Board Connector(CN1)

Table 17. CCC Board Connector
Pin No.	Signal Name	Function	Signal Direction
1	3.3V	DC3.3V	-
2	L-GND	Logic-GND	-
3	N.C.	-	-
4	L-GND	Logic-GND	-
5	L-GND	Logic-GND	-
6	SPICLK	Not used.	-
7	L-GND	Logic-GND	-
8	L-GND	Logic-GND	-
9	N.C.	-	-
10	L-GND	Logic-GND	-
11	L-GND	Logic-GND	-
12	SPISOMI	Not used.	-
13	IOPB3	Input MUX Control bit3	Input
14	L-GND	Logic-GND	-
15	L-GND	Logic-GND	-
16	SPISIMO	Not used.	-
17	IOPB2	Input MUX Control bit2	Input
18	L-GND	Logic-GND	-
19	5V	DC 5V	-
20	3.3V	DC 3.3V	-
21	IOPE5	Not used.	-
22	L-GND	Logic-GND	-
23	L-GND	Logic-GND	-
24	SPISTE or SPI_CS1	Not used.	-
25	IOPB1	Input MUX Control bit1	Input
26	L-GND	Logic-GND	-
27	L-GND	Logic-GND	-
28	L-GND	Logic-GND	-
29	IOPB0	Input MUX output	Output
30	L-GND	Logic-GND	-
31	L-GND	Logic-GND	-
32	5V	DC 5V	-
33	IOPA7	Output MUX Control bit4	Input
34	L-GND	Logic-GND	-
35	L-GND	Logic-GND	-
36	3.3V	DC 3.3V	-
37	IOPE4	Node ID bit4	Output
38	L-GND	Logic-GND	-
39	L-GND	Logic-GND	-
40	SCIRXD	DEBUG PORT	Output
41	IOPA6	Output MUX Control bit3	Input
42	L-GND	Logic-GND	-
43	L-GND	Logic-GND	-
44	SCITXD	DEBUG PORT	Input
45	IOPE3	Node ID bit3	Output
46	L-GND	Logic-GND	-
47	L-GND	Logic-GND	-
48	XINT1	Not used.	-
49	IOPE2	Node ID bit2	Output
50	L-GND	Logic-GND	-
51	L-GND	Logic-GND	-
52	XINT2	Not used.	-
53	IOPE1	Node ID bit1	Output
54	L-GND	Logic-GND	-
55	L-GND	Logic-GND	-
56	IOPB5	Input MUX Control bit5	Input
57	CCC_STATUS_LED	Not used.	-
58	L-GND	Logic-GND	-
59	5V	DC 5V	-
60	IOPB4	Input MUX Control bit4	Input
61	IOPE0	Node ID bit0	Output
62	L-GND	Logic-GND	-
63	L-GND	Logic-GND	-
64	IOPB6	Not used.	-
65	IOPA5	Output MUX Control bit2	Input
66	L-GND	Logic-GND	-
67	L-GND	Logic-GND	-
68	IOPA3	Output MUX output	Input
69	IOPA4	Output MUX Control bit1	Input
70	LOOPBACK	Not used.	-
71	L-GND	Logic-GND	-
72	LOOPBACK	Not used.	-
73	CCC_ERROR_LED	Not used.	-
74	L-GND	Logic-GND	-
75	L-GND	Logic-GND	-
76	RESET	Not used.	-
77	5V	DC 5V	-
78	L-GND	Logic-GND	-
79	L-GND	Logic-GND	-
80	IOPC1	Not used.	-
81	5V	DC 5V	-
82	3.3V	DC 3.3V	-
83	A-GND	Analog-GND	-
84	A-GND	Analog-GND	-
85	A-GND	Analog-GND	-
86	ADCIN15	Not used.	-
87	3.3V	DC 3.3V	-
88	A-GND	Analog-GND	-
89	A-GND	Analog-GND	Output
90	ADCIN07	Not used.	-
91	ADCUN06	Not used.	-
92	A-GND	Analog-GND	-
93	A-GND	Analog-GND	-
94	ADCIN14	Not used.	-
95	ADCIN05	Not used.	-
96	A-GND	Analog-GND	-
97	A-GND	Analog-GND	-
98	ADCIN04	Not used.	-
99	ADCIN13	Not used.	-
100	A-GND	Analog-GND	-
101	A-GND	Analog-GND	-
102	ADCIN03	CAN DC 24V monitor	Output
103	ADCIN12	Not used.	-
104	A-GND	Analog-GND	-
105	A-GND	Analog-GND	-
106	ADCIN02	DC 3.3V monitor	Output
107	ADCIN11	Not used.	-
108	A-GND	Analog-GND	-
109	A-GND	Analog-GND	-
110	ADCIN10	Not used.	-
111	ADCIN01	DC 5V monitor	Output
112	A-GND	Analog-GND	-
113	A-GND	Analog-GND	-
114	ADCIN09	Not used.	-
115	ADCIN00	DC 24V monitor	Output
116	A-GND	Analog-GND	-
117	A-GND	Analog-GND	-
118	L-GND	Logic-GND	-
119	ADCIN08	Not used.	-
120	3.3V	DC 3.3V	-

Leakage Sensor Connector(J3)

Table 18. Leakage Sensor
Pin No.	Signal Name	Function	Signal Direction
1	OUT+	Leakage input(Sensor1)	Input
2	BURN OUT+	Sensor fault input(Sensor1)	Input
3	COM-	Common GND	Output
4	N.C.	-
5	24V	Not used	-
6	GND	Not used	-
7	N.C.	-
8	OUT+	Leakage input(Sensor2)	Input
9	BURN OUT+	Sensor fault input(Sensor2)	Input
10	COM-	Common GND	Output
11	N.C.	-
12	24V	Not used	-
13	GND	Not used	-
14	N.C.	-
15	OUT+	Leakage input(Sensor3)	Input
16	BURN OUT+	Sensor fault input(Sensor3)	Input
17	COM-	Common GND	Output
18	N.C.	-
19	24V	Not used	-
20	GND	Not used	-

Temperate Sensor1(Left Cabinet) Connector(J4)

Table 19. Temperate Sensor1(Left Cabinet)
Pin No.	Signal Name	Function	Signal Direction
1	N.C.	-	-
2	VCC	DC5V	-
3	N.C.	-	-
4	VCC	DC5V	-
5	N.C.	-	-
6	OUT1	Signal becomes high, if temperature becomes more than 40±3℃	Input
7	GND	GND(5V/3.3V)	-
8	OUT2	Signal becomes high, if temperature becomes more than 45±3℃	Input
9	GND	GND(5V/3.3V)	-
10	N.C.	-	-

Temperate Sensor2(Right Cabinet) Connector(J5)

Table 20. Temperate Sensor2(Right Cabinet)
Pin No.	Signal Name	Function	Signal Direction
1	N.C.	-	-
2	VCC	DC5V	-
3	N.C.	-	-
4	VCC	DC5V	-
5	N.C.	-	-
6	OUT1	Signal becomes high, if temperature becomes more than 40±3℃	Input
7	GND	GND(5V/3.3V)	-
8	OUT2	Signal becomes high, if temperature becomes more than 45±3℃	Input
9	GND	GND(5V/3.3V)	-
10	N.C.	-	-

Alarm Connector(J6)

Table 21. Alarm connector
Pin No.	Signal Name	Function	Signal Direction
1(not used)	DCERD signal (not used)	DCERD Input signal (not used)	Input (not used)
2	GND	GND(5V/3.3V)	-
3	N.C.	-	-
4	BRM Pump signal	BRM Pump Input signal	Input
5	GND	GND(5V/3.3V)	-
6	N.C.	-	-
7	Cabinet PUMP signal	Cabinet PUMP Input signal	Input
8	GND	GND(5V/3.3V)	-

Water Level Connector(J7)

Table 22. Water Level connector
Pin No.	Signal Name	Function	Signal Direction
1	N.C.	N.C.	-
2	Water Level signal	Water Level Input signal	Input open/short signal(Normal open)
3	GND	GND(5V/3.3V)	-

LED Connector1(J8)

Table 23. LED Connector1
Pin No.	Signal Name	Function	Signal Direction
1	leakage1_Anode (not used)	Leakage Sensor1 leakage LED Anode Signal	Output
2	leakage1_Cathode (not used)	Leakage Sensor1 leakage LED Cathode Signal	Output
3	burnout1_Anode (not used)	Leakage Sensor1 sensor fault LED Anode Signal	Output
4	burnout1_Cathode (not used)	Leakage Sensor1 sensor fault LED Cathode Signal	Output
5	leakage2_Anode	Leakage Sensor2 leakage LED Anode Signal	Output
6	leakage2_Cathode	Leakage Sensor2 leakage LED Cathode Signal	Output
7	burnout2_Anode	Leakage Sensor2 sensor fault LED Anode Signal	Output
8	burnout2_Cathode	Leakage Sensor2 sensor fault LED Cathode Signal	Output
9	leakage3_Anode	Leakage Sensor3 leakage LED Anode Signal	Output
10	leakage3_Cathode	Leakage Sensor3 leakage LED Cathode Signal	Output
11	burnout3_Anode	Leakage Sensor3 sensor fault LED Anode Signal	Output
12	burnout3_Cathode	Leakage Sensor3 sensor fault LED Cathode Signal	Output
13	Temp1_out2_Anode	Temp Sensor1 out2 LED Anode Signal	Output
14	Temp1_out2_Cathode	Temp Sensor1 out2 LED Cathode Signal	Output

LED Connector2(J9)

Table 24. LED Connector2
Pin No.	Signal Name	Function	Signal Direction
1	Temp1_out1_Anode	Temp Sensor1 out1 LED Anode Signal	Output
2	Temp1_out1_Cathode	Temp Sensor1 out1 LED Cathode Signal	Output
3	Temp2_out2_Anode	Temp Sensor2 out2 LED Anode Signal	Output
4	Temp2_out2_Cathode	Temp Sensor2 out2 LED Cathode Signal	Output
5	Temp2_out1_Anode	Temp Sensor2 out1 LED Anode Signal	Output
6	Temp2_out1_Cathode	Temp Sensor2 out1 LED Cathode Signal	Output
7	DCERD_Anode (not used)	DCERD LED Anode Signal	Output
8	DCERD_Cathode (not used)	DCERD LED Cathode Signal	Output
9	BRM cooling Pump_Anode	BRM cooling Pump LED Anode Signal	Output
10	BRM cooling Pump_Cathode	BRM cooling Pump LED Cathode Signal	Output
11	WaterLevel_Anode	WaterLevel LED Anode Signal	Output
12	WaterLevel Cathode	WaterLevel LED Cathode Signal	Output
13	Cabinet cooling Pump_Anode	Cabinet cooling Pump Anode Signal	Output
14	Cabinet cooling Pump_Cathode	Cabinet cooling Pump Cathode Signal	Output

Relay Drive Connector(J14)

Table 25. Relay Drive
Pin No.	Signal Name	Function	Signal Direction
1	Driver1 (+)	Relay1 control signal(+)	Output
2	Driver1 (-)	Relay1 control signal (-)	Output
3	Driver2 (+)	Relay2 control signal (+)	Output
4	Driver2 (-)	Relay2 control signal (-)	Output
5	Driver3 (+)	Relay3 control signal (+)	Output
6	Driver3 (-)	Relay3 control signal (-)	Output
7	Driver4 (+)	Relay4 control signal (+)	Output
8	Driver4 (-)	Relay4 control signal (-)	Output
9	Driver5 (+)	Relay5 control signal (+)	Output
10	Driver5 (-)	Relay5 control signal (-)	Output
11	N.C.	-	-
12	N.C.	-	-
13	N.C.	-	-
14	N.C.	-	-
15	N.C.	-	-

Magnet Monitor Out Connector(J13)

Table 26. Magnet Monitor Out
Pin No.	Signal Name	Function	Signal Direction
1	Relay Point1	Relay Signal	Output
2	Relay Point2	Relay Signal	Output

Standby Mode Connector(J11)

Table 27. Standby Mode
Pin No.	Signal Name	Function	Signal Direction
1	DEBUG_Rx	Serial Input	Input
2	DEBUG_Tx	Serial Output	Output
3	OVNMODE_N(-)	Standby Signal(RS422- side)	Input
4	OVNMODE_P(+)	Standby Signal (RS422+ side)	Input
5	GND	GND(5V/3.3V)	-
6	N.C.	-	-
7	N.C.	-	-
8	N.C.	-	-
9	N.C.	-	-

CAN SIGNAL INPUT CONNECTOR (CN3)

Table 28. CAN SIGNAL INPUT CONNECTOR
Pin No.	Signal Name	Function	Signal Direction
1	N.C.	-	-
2	GND	GND(CAN-24V)	-
3	CAN_LOW	CAN_LOW	Input/Output
4	CAN_HIGH	CAN_HIGH	Input/Output
5	GND	GND(CAN-24V)	-
6	N.C.	-	-
7	N.C.	-	-
8	DC24V	CAN DC24V	-
9	N.C.	-	-
10	N.C.	-	-

CAN SIGNAL OUTPUT CONNECTOR 1(J10)

Table 29. CAN SIGNAL OUTPUT CONNECTOR 1
Pin No.	Signal Name	Function	Signal Direction
1	N.C.	-	-
2	CAN_LOW	CAN_LOW	Input/Output
3	GND	GND(CAN-24V)	-
4	N.C.	-	-
5	N.C.	-	-
6	GND	GND(CAN-24V)	-
7	CAN_HIGH	CAN_HIGH	Input/Output
8	N.C.	-	-
9	DC24V	CAN DC24V	-
10	N.C

CAN SIGNAL OUTPUT CONNECTOR 2(J12)

Table 30. CAN SIGNAL OUTPUT CONNECTOR 2
Pin No.	Signal Name	Function	Signal Direction
1	N.C.	-	-
2	CAN_LOW	CAN_LOW	Input/Output
3	GND	GND(CAN-24V)	-
4	N.C.	-	-
5	N.C.	-	-
6	GND	GND(CAN-24V)	-
7	CAN_HIGH	CAN_HIGH	Input/Output
8	N.C.	-	-
9	DC24V	CAN DC24V	-
10	N.C

CPLD JTAG CONNECTOR(CN2)

Table 31. CPLD JTAG CONNECTOR
Pin No.	Signal Name	Function	Signal Direction
1	TCK	Clock signal	INPUT
2	GND	GND(5V/3.3V)	-
3	TDO	Data from device	OUTPUT
4	VCC	DC 5V	-
5	TMS	JTAG state	INPUT
6	N.C.	-	-
7	N.C.	-	-
8	N.C.	-	-
9	TDI	Data to device	INPUT
10	GND	GND(5V/3.3V)	-

Function Specification

Reset Circuit

There is a Power ON Reset Circuit for CPLD on the Cabinet Monitor Board. The following figure shows the block diagram.

※ Delay time can be calculated 220 milliseconds = 10Kohm(Resistance) X 10uF(Capacitance) X 2.2(Constant Value)

Power Monitor Circuit

There are four voltage monitors(3.3V ・5V ・24V ・24V(CAN)) circuit on the Cabinet Monitor Board.

3.3V and 5V monitor are used 2 lines Op-Amp and 24V ・24V(CAN) monitor are used Analog Photo coupler, because 24V・24V(CAN) power should be isolated.

Leakage Sensor

The following shows the block diagram of the leakage sensor.

Temperature Sensor

The following shows the block diagram of the Temperature sensor.

Alarm Circshuuit(TANK,PUMP)

The following shows the block diagram of the Alarm Circuit.

Standby Mode

The following shows the block diagram of the Standby Mode.

Magnet Monitor Out

The following shows the block diagram of the Magnet Monitor Out.

Relay Drive(1-5)

The following shows the block diagram of the Relay Driver. Output signal shall be isolated by photo coupler before relay driver.

CAN INTERFACE

The following shows the block diagram of the CAN Interface. CAN signal from CCC Board connect with two D-sub 9 pin. And CAN DC 24V also shall be provided.

Node-ID DIP Switch

The following shows the block diagram of the CAN Node-ID. The Node ID shall be selectable by this DIP-SW. The Cabinet Monitor Node ID shall be set to 12((H)01100(L)).