3
3) DIGITAL INPUT (1):
Dry contact closure for resetting latched relay
4) OUTPUTS:
a. Meter Output:
0 – 1 mA meter output for loads up to 750 ohms
b. Proportional Output:
Proportional to input frequency range, configurable as:
i.
4 – 20 mA into maximum 1K load
And one of either:
ii.
0 – 5 VDC into 20K load or higher or
iii.
0 – 10VDC into 20K load or higher
Note that the 4 – 20 mA output is isolated but the 0 – 5
VDC & 0 – 10 VDC outputs are referenced to input
supply ground.
c. Supply Output:
Reg12 VDC ±5%; 40 mA for active pickup
power.
d. Repeater Output:
Square wave 12 V peak-to-peak, 10 mA max load,
Zero based, positive going.
e. Response Time:
50 milliseconds, 10% to 90% rise (standard)
Full-scale frequency ranges below 80 Hz are
proportionally slower
f. Linearity:
0.1% of full-scale (0.05%, typical) all outputs
g.
Stability:
Less than 0.05% of full-scale change with a 10%
change in supply voltage. Temperature coefficient
±0.01% per °F (±0.018% per °C)
5) RELAY OUTPUT:
Applies to SST7100 only
a. Type:
SPDT relay contacts (isolated dry contacts)
b. Contact Rating:
6.0 A @ 28 VDC or 115 VAC (resistive)
2.0 A @ 230 VAC
1.0 A into 500 mH for up to 100,000 cycles
c. Hysteresis:
Selectable (1% of full-scale frequency default)
d. Setpoints:
Programmable for:
i.
Overspeed / under speed trip
ii.
Energize or de-energize when setpoint reached
iii.
Latching or non-latching (auto reset)
iv.
Underspeed setpoints are Class C Logic (active
once normal)
v.
Latched relays are reset via digital input
e. Stability:
Less than 0.05% of setpoint change with a 10%
change in supply voltage. Temperature coefficient
±0.01% per °F (±0.018% per °C)
Содержание SST7000
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