Citizen SA-SD, Operation Manual

Page: 89 / 94

9- 1
9. Specifications
9-1 Specifications
Type
Master unit Slave unit
High performance type Standard type Wire saving type
Model
NPN SA-SD1AP SA-SD1AC SA-SD1C
SA-SDNC
PNP SA-SD1AP-P SA-SD1AC-P SA-SD1C-P
Number of connectable
units
Up to 15 slave units to one master unit
Power voltage 24 VDC ±10% Including ripple of 0.5 V (P-P)
Current consumption
(Note 2)
70 mA or less (when connected to sensor heads)
Analog current output
(Note 3)
Current output range: 4 to 20 mA F.S.
(Default)
Output during error: 0 mA
Linearity: ±0.25% F.S.
Load impedance: 250 Ω MAX.
―
C
o
n
tr
o
l
o
u
tp
u
t Output
[NPN output type]
NPN open-collector transistor
Maximum inflow current: 50 mA (Note 4)
Applied voltage: 30 VDC or lower (output – 0 V)
Residual voltage: 1.5 V or lower (at inflow current: 50 mA)
Leakage current: 0.1 mA or less
[PNP output type]
PNP open-collector transistor
• Maximum outflow current: 50 mA (Note 4)
• Applied voltage: 30 VDC or lower (output – +V)
• Residual voltage: 1.5 V or lower (at outflow current: 50 mA)
• Leakage current: 0.1 mA or less
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Short-circuit
protection
Incorporated (automatic recovery)
Judgment output NO/NC
Alarm output Open when alarm activated
External output
Output 1/Output 2/Output 3 can be switched between "HI/GO/LO," "HI
or LO/IN RANGE/ALARM," and "LO/HI/ALARM."
―
E
x
te
rn
a
l
in
p
u
t
Input
[NPN output type]
Non-contact input or NPN open-collector transistor
• Input condition: Ineffective (+8 V to +VDC or open)
Effective (0 to +1.2 VDC)
• Input impedance: Approx. 10 k
Ω
[PNP output type]
Non-contact input or PNP open-collector transistor
• Input condition: Ineffective (0 to +0.6 VDC or open)
Effective (+4 V to +VDC)
• Input impedance: Approx. 10 k Ω
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Trigger input Input duration: 2 ms or longer (ON)
Preset input Input duration: 20 ms or longer (ON)
Reset input Input duration: 20 ms or longer (ON)
Bank input A/B Input duration: 20 ms or longer (ON)
External input
Input 1/Input 2/Input 3 can be switched between "Preset/Reset/Trigger"
and "Bank input A/Bank input B/Selection (Preset, Reset, or Trigger)."
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