Siemens 9350 Manual De Usuario
9300 Series User’s Guide
I/O Connections
Chapter 7 - Hardware Reference
Page 155
Digital Inputs
The meter supports four digital inputs. These can be used for monitoring the
condition of an external contact, or for pulse counting applications.
condition of an external contact, or for pulse counting applications.
Analog Inputs
Two types of analog input ports are available when you order a meter (refer to
your meter’s label to determine what type you ordered):
your meter’s label to determine what type you ordered):
Description
Specification
Input Type
Self-excited (internal 30 VDC supply)
Inputs
S1, S2, S3, S4
Application
Dry contact sensing, or with external excitation.
Wire
28 to 16 AWG (0.1 to 1.3 mm
2
)
Connector Type
Captured wire
Max. Pulse Width
25 pulses per second
Specification
0-20 mA (scalable to
4-20 mA) Option
0-1 mA Option
Input Impedance
25 Ω
475 Ω
Maximum Source
Impedance
Impedance
500 Ω
10 kΩ
Accuracy
±0.3% of full-scale
Inputs
AI1, AI2, AI3, AI4
Connectors
Phoenix captured-wire
Update Rate
1 Hz
Channel to Channel
Isolation
Isolation
None
Max. Common Mode
Voltage
Voltage
30 V
Standards Compliance
IEC 61000-4-4 fast transient test with capacitive clamp (4 kVp-p@2.5
kHz for 1 min)
kHz for 1 min)
C
S3
S4
S2
S1
R
S1
C (+)
30 VDC
Internal
Supply
Optically coupled
solid state relay
Internal Circuit
Digital Inputs
External Dry
Contacts
Polarity
for SSR
Contact
shown.