Honeywell HPFF12 Installation And Operation Manual page 14

System Overview
End-of-line Resistor Reference – TB3 (on Control circuit board); terminals REF+ and REF–.
• Used for the ELR compare feature.
• Range: 1.9K ohms to 25K ohms.
• 12 AWG (3.31 mm²) to 22 AWG (0.326 mm²).
NAC Output Circuits — TB4 (on Control circuit board); terminals 1L1(+), 1L2(–), 2L1(+),
2L2(–), 3L1(+), 3L2(–), 4L1(+), and 4L2(–) — alarm polarity in parentheses. (See below for
other TB4 terminals.)
• Supervised, special application, and power-limited.
• Voltage rating: 24 VDC filtered.
• Current:
– Maximum for any one circuit: 3.0 A.
– Maximum total continuous for all outputs: HPFF12, HPFF12CM, HPFF12E, HPFF12CME:
12.0 A
• Output circuit types:
– four Class B (Style Y); or
– two Class A (Style Z);
– two Class B (Style Y) and one Class A (Style Z) NACs; or
– four Class A (Style Z) NACs with optional HPP31076 Class A adaptor.
• 12 AWG (3.31 mm²) to 18 AWG (0.75 mm²).
• Refer to Appendix A, "Device Compatibility", on page 53 for listed compatible devices.
Trouble Contact Rating — TB2 (on Control circuit board); terminals TROUBLE: N/C,
COM, and N/O.
• Not supervised.
• Fail-safe Form-C relay.
• Normally energized, transfers with NAC, battery, charger (in standby), AC loss, ground fault,
and auxiliary output trouble.
• 2.0 A @ 30 VDC.
• AC loss trouble can be delayed for 2 hours (see "Programming Options").
• 12 AWG (3.31 mm²) to 18 AWG (0.75 mm²).
AC Fail Contact Rating — TB2 (on Control circuit board); terminals AC FAIL: N/C, COM,
N/O. (See above for other TB4 terminals.)
• Not supervised.
• Fail-safe Form-C relay.
• Normally energized, always transfers with AC loss.
• 2.0 A @ 30 VDC.
• 12 AWG (3.31 mm²) to 18 AWG (0.75 mm²).
Battery Charging Circuit — TB1 (on Control circuit board); terminals +BATT and –BATT.
• Supervised, non-power-limited.
• Supports lead-acid type batteries only.
• Float charge voltage: 26.6 VDC.
• Charger disabled if battery voltage falls below 15 VDC.
• Maximum charge current: 0.75 A.
• Battery fuse (F1): 15 A, 32 V.
• Maximum battery capacity: 26.0 AH.
• Minimum battery capacity: 7.0 AH.
• Power supply draws a maximum standby current of 75 mA from batteries.
14 HPFF12 NAC Expander — P/N 53576:B 11/24/2010
Specifications