Instruction manual

ControlWave GFC IS Communication Interface Manual (CI-CW-GFC-ISTRAN)
2-4 Function and Electrical Characteristics Issued Nov-09
Table 2-5 provides the characteristics of the non-hazardous interface.
Table 2-5. Non-Hazardous Interface Characteristics
Description Specification
NPIN Voltage (When
HPOUT is not used)
Minimum: 5.4 VDC
Maximum: 16 VDC
NPIN Voltage (When
HPOUT is used)
Minimum: 8 VDC
Maximum: 16 VDC
NPIN Supply Current
(Switched Mode,
Transmitters Off)
Typical: < 500 uA at 12 VDC, 77 F (25
C)
Maximum: 750 uA
NPIN Supply Current (All
TX Outputs High, 3
KWLoads)
Maximum: 37 mA
NPOUT Leakage Typical: < 1 uA Maximum: 100 uA
NPIN to NPOUT On-
Resistance (NPIN ³ 12 V)
Typical: < 0.3 ohm
Maximum: 0.5 ohm
NRX3 to NPOUT On Typical: < 10 uS
NPOUT Load Current Maximum: 1.8 A Continuous
Maximum: 3.0 A Intermittent (Max 60
Seconds, 50% duty)
NTX Output High Level Typical: 7.4 VDC into 3 Kohm Load
Minimum: 5.0 VDC
Maximum: 9.5 VDC
NTX Output Low Level Typical: -4.9 VDC into 3 Kohm Load
Minimum: -9.5 VDC
Maximum: -3.0 VDC
NJP1 Jumper Operation If you didn’t install a jumper, or if you installed
a jumper between pins 1 and 2 (SW), the non-
hazardous interface operates in switched
mode. If you install a jumper between pins 2
and 3 (UNSW), the non-hazardous interface
operates in unswitched mode. (Figure 2-2
shows the jumper in switched mode.)