JRC JMR-9225-9X - Page 67

2-9 Chapter 2 System Configuration
The power system diagram is shown in Fig. 2.2.1.
PSU (Power Supply Unit: NBD-913) supplies power to the Scanner Unit and Display Unit which
consists of MNU(Monitor Unit), CCU (Central Control Unit), OPU(Operation Unit), and
JB(Junction Box). The lists of Input/Output features of the PSU are given in Table 2.2.2 and Table
2.2.3.
Table 2.2.2 The list of PSU input section
Input
Detail
AC Input
Voltage
100 to 115Vac
220 to 240Vac
Voltage ranges 85 to 264VAC
Overvoltage Protection 295VAC±2V,
Frequency
50Hz / 60Hz
Input Current Max 6.8A(100VAC) / 3.4A(220VAC)
Over current Protection equipped
DC Input
Voltage
24Vdc
Voltage ranges
21.6 to 31.2Vdc
Overvoltage Protection
42V
Input Current
Max 16A
Over current Protection equipped
Control Signals
N_24V_ON
CCU power control signal.
Open Collector Input.
Logic Level L: 24Vdc (CCU) ON.
N_MTR_ON
Scanner unit power control signal.
Open Collector Input.
Logic Level L: 100-220Vac, 48Vdc, 24Vdc (M+. M-
), and
24Vdc (1A, 2A) ON.
N_MNU_ON
Monitor unit power control signal.
Open Collector Input.
Logic Level L: 24Vdc (MNU) ON.