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WAGO 789665 Ground Resistance Signaling Module
The WAGO 789-665 ground resistance signaling module provides a reliable solution for monitoring ground faults in industrial applications. It signals a value falling below a non-adjustable isolation resistance between the supply voltage and ground using a potential-free contact and status LED. The module can be evaluated via a PLC and offers two operating modes: grounded and ungrounded control circuits. It's designed for use in automated systems requiring isolation monitoring and is suitable for a wide range of industrial environments.
WAGO 789665 Ground Resistance Signaling Module Specifications:
- Nominal supply voltage US: DC 24 V (SELV)
- Supply voltage range (DC): DC 18 … 31.2 V
- Power consumption at nominal supply voltage: ≤ 40 mA
- Power loss Pl: ≤ 1.7 W
- Current at ground fault (24 VDC) (max.): 56 mA
- Operation status indicator: 1 x LED “Status OK” (green)
- Signaling: 1 x LED “Iso Alarm” (red)
- Signaling 24 V ‒ Ground: 1 x LED “Iso Alarm” (yellow)
- Signaling 0 V ‒ Ground: 1 x LED “Iso Alarm” (yellow)
- Signal output “Iso OK”: 1 x
- Schaltspannung max.: 48 VDC (SELV)
- Continuous current (max.): 500 mA (for general use)
- Number of Iso OK contacts connected in series (max.): 25 (Limit value type: 1); 32 (Limit value type: 2 and 3)
- Function: 1 make contact (NO); closed with applied power supply and insulation resistance > limit value
- Required backup fusing: The fuse must be placed in the output circuit of the power supply.
- Pollution degree: 2
- Overvoltage category: II
- Protection type: IP20
- Test voltage (supply/”Iso OK” contact): 1.5 kVAC; 50 … 60 Hz; 1 min
- MTBF: > 600,000 h (per MIL-HDBK-217F2)
- Response value for alarm at nominal supply voltage (grounded): 4 kΩ (at U = 24 V)
- Response time (grounded): 10 s
- Hysteresis (typ.) (grounded): 1 kΩ
- Response value for alarm at nominal supply voltage (ungrounded): 4 kΩ (at U = 24 V)
- Response time (ungrounded): 1 s
- Hysteresis (typ.) (ungrounded): 1 kΩ
- Surrounding air temperature (operation): -40 … +70 °C
- Surrounding air temperature (storage): -40 … +85 °C
- Relative humidity: 5 … 95 % (non-condensing)
- Solid conductor (X1.x): 0.25 … 1.5 mm² / 24 … 14 AWG
- Fine-stranded conductor (X1.x): 0.25 … 1.5 mm² / 24 … 14 AWG
- Fine-stranded conductor with insulated ferrule (X1.x): 0.25 … 0.75 mm²
- Fine-stranded conductor with uninsulated ferrule (X1.x): 0.25 … 1.5 mm²
- Strip length (X1.x): 8 … 9 mm / 0.31 … 0.35 inch
- Solid conductor (X2.x): 0.2 … 2.5 mm² / 24 … 12 AWG
- Fine-stranded conductor (X2.x): 0.2 … 2.5 mm² / 24 … 14 AWG
- Fine-stranded conductor with insulated ferrule (X2.x): 0.25 … 1.5 mm²
- Fine-stranded conductor with uninsulated ferrule (X2.x): 0.25 … 2.5 mm²
- Strip length (X2.x): 9 … 10 mm / 0.35 … 0.39 inch
- Width: 18 mm / 0.71 inch
- Height: 90 mm / 3.54 inch
- Depth from upper edge of DIN-rail: 51 mm / 2.01 inch
- Weight: 47 g
- Conformity marking: CE
- EMC immunity to interference: EN 61000
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Frequently Asked Questions
Where can I buy WAGO 789665?
You can click on the BUY or RFQ button to purchase 789665 from an authorized WAGO distributor.
How do I troubleshoot issues or seek technical support for part 789665?
You can download the 789665 datasheet or visit the WAGO website for support.
Who is the manufacturer of 789665?
WAGO